Maybe this additional information will help: *-network description: Ethernet interface product: Ethernet Connection (2) I219-V vendor: Intel Corporation physical id: 1f.6 bus info: pci@0000:00:1f.6 logical name: enp0s31f6 version: 00 serial: "removed" size: 1Gbit/s capacity: 1Gbit/s width: 32 bits clock: 33MHz capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k duplex=full firmware=0.2-4 ip="removed" latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s resources: irq:125 memory:df300000-df31ffff dmesg | grep e1000e [ 2.404883] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k [ 2.415926] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. [ 2.427096] e1000e 0000:00:1f.6: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode [ 2.690764] e1000e 0000:00:1f.6 0000:00:1f.6 (uninitialized): registered PHC clock [ 2.762812] e1000e 0000:00:1f.6 eth0: (PCI Express:2.5GT/s:Width x1) 70:85:c2:7d:b6:b5 [ 2.762813] e1000e 0000:00:1f.6 eth0: Intel(R) PRO/1000 Network Connection [ 2.762867] e1000e 0000:00:1f.6 eth0: MAC: 12, PHY: 12, PBA No: FFFFFF-0FF [ 2.866293] e1000e 0000:00:1f.6 enp0s31f6: renamed from eth0 [ 13.818417] e1000e: enp0s31f6 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx Here's the logs from the NetworkManager service over the last few days. Aug 01 03:47:21 t2trvs01 NetworkManager[1358]: [1533109641.5958] manager: NetworkManager state is now CONNECTED_SITE Aug 01 03:47:23 t2trvs01 NetworkManager[1358]: [1533109643.5981] device (enp0s31f6): state change: activated -> deactivating (reason 'user-requested', sys-iface-state: 'managed') Aug 01 03:47:23 t2trvs01 NetworkManager[1358]: [1533109643.5986] manager: NetworkManager state is now DISCONNECTING Aug 01 03:47:23 t2trvs01 NetworkManager[1358]: [1533109643.6514] audit: op="device-disconnect" interface="enp0s31f6" ifindex=2 pid=2705 uid=1000 result="success" Aug 01 03:47:23 t2trvs01 NetworkManager[1358]: [1533109643.6517] device (enp0s31f6): state change: deactivating -> disconnected (reason 'user-requested', sys-iface-state: 'managed') Aug 01 03:47:23 t2trvs01 NetworkManager[1358]: [1533109643.6844] dhcp4 (enp0s31f6): canceled DHCP transaction, DHCP client pid 1840 Aug 01 03:47:23 t2trvs01 NetworkManager[1358]: [1533109643.6845] dhcp4 (enp0s31f6): state changed bound -> done Aug 01 03:47:23 t2trvs01 NetworkManager[1358]: [1533109643.6853] manager: NetworkManager state is now DISCONNECTED Aug 01 03:47:30 t2trvs01 NetworkManager[1358]: [1533109650.9943] device (enp0s31f6): Activation: starting connection 'netplan-enp0s31f6' (0fb5685d-476e-39b6-8090-4f5b35b00deb) Aug 01 03:47:30 t2trvs01 NetworkManager[1358]: [1533109650.9944] audit: op="connection-activate" uuid="0fb5685d-476e-39b6-8090-4f5b35b00deb" name="netplan-enp0s31f6" pid=2705 uid=1000 result="s Aug 01 03:47:30 t2trvs01 NetworkManager[1358]: [1533109650.9945] device (enp0s31f6): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed') Aug 01 03:47:30 t2trvs01 NetworkManager[1358]: [1533109650.9946] manager: NetworkManager state is now CONNECTING Aug 01 03:47:30 t2trvs01 NetworkManager[1358]: [1533109650.9947] device (enp0s31f6): state change: prepare -> config (reason 'none', sys-iface-state: 'managed') Aug 01 03:47:30 t2trvs01 NetworkManager[1358]: [1533109650.9951] device (enp0s31f6): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed') Aug 01 03:47:30 t2trvs01 NetworkManager[1358]: [1533109650.9953] dhcp4 (enp0s31f6): activation: beginning transaction (timeout in 45 seconds) Aug 01 03:47:30 t2trvs01 NetworkManager[1358]: [1533109650.9962] dhcp4 (enp0s31f6): dhclient started with pid 19238 Aug 01 03:47:31 t2trvs01 dhclient[19238]: DHCPREQUEST of 192.168.10.46 on enp0s31f6 to 255.255.255.255 port 67 (xid=0x1f78fd4) Aug 01 03:47:31 t2trvs01 dhclient[19238]: DHCPACK of 192.168.10.46 from 192.168.10.1 Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0423] dhcp4 (enp0s31f6): address 192.168.10.46 Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0424] dhcp4 (enp0s31f6): plen 24 (255.255.255.0) Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0424] dhcp4 (enp0s31f6): gateway 192.168.10.1 Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0425] dhcp4 (enp0s31f6): lease time 259200 Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0425] dhcp4 (enp0s31f6): nameserver '192.168.xx,xx' Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0426] dhcp4 (enp0s31f6): nameserver '8.8.8.8' Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0426] dhcp4 (enp0s31f6): nameserver '142.4.204.111' Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0426] dhcp4 (enp0s31f6): nameserver '162.248.241.94' Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0426] dhcp4 (enp0s31f6): state changed unknown -> bound Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0466] device (enp0s31f6): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed') Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0476] device (enp0s31f6): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed') Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0477] device (enp0s31f6): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed') Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0478] manager: NetworkManager state is now CONNECTED_LOCAL Aug 01 03:47:31 t2trvs01 dhclient[19238]: bound to 192.168.10.46 -- renewal in 98719 seconds. Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0897] manager: NetworkManager state is now CONNECTED_SITE Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0898] policy: set 'netplan-enp0s31f6' (enp0s31f6) as default for IPv4 routing and DNS Aug 01 03:47:31 t2trvs01 NetworkManager[1358]: [1533109651.0900] device (enp0s31f6): Activation: successful, device activated. Aug 01 03:47:43 t2trvs01 NetworkManager[1358]: [1533109663.2399] manager: NetworkManager state is now CONNECTED_GLOBAL Aug 01 22:42:21 t2trvs01 NetworkManager[1358]: [1533177741.5958] manager: NetworkManager state is now CONNECTED_SITE Aug 01 22:43:25 t2trvs01 NetworkManager[1358]: [1533177805.7318] device (enp0s31f6): state change: activated -> deactivating (reason 'user-requested', sys-iface-state: 'managed') Aug 01 22:43:25 t2trvs01 NetworkManager[1358]: [1533177805.7322] manager: NetworkManager state is now DISCONNECTING Aug 01 22:43:25 t2trvs01 NetworkManager[1358]: [1533177805.7708] audit: op="device-disconnect" interface="enp0s31f6" ifindex=2 pid=2705 uid=1000 result="success" Aug 01 22:43:25 t2trvs01 NetworkManager[1358]: [1533177805.7711] device (enp0s31f6): state change: deactivating -> disconnected (reason 'user-requested', sys-iface-state: 'managed') Aug 01 22:43:25 t2trvs01 NetworkManager[1358]: [1533177805.8036] dhcp4 (enp0s31f6): canceled DHCP transaction, DHCP client pid 19238 Aug 01 22:43:25 t2trvs01 NetworkManager[1358]: [1533177805.8037] dhcp4 (enp0s31f6): state changed bound -> done Aug 01 22:43:25 t2trvs01 NetworkManager[1358]: [1533177805.8047] manager: NetworkManager state is now DISCONNECTED Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6186] device (enp0s31f6): Activation: starting connection 'netplan-enp0s31f6' (0fb5685d-476e-39b6-8090-4f5b35b00deb) Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6189] audit: op="connection-activate" uuid="0fb5685d-476e-39b6-8090-4f5b35b00deb" name="netplan-enp0s31f6" pid=2705 uid=1000 result="s Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6193] device (enp0s31f6): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed') Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6196] manager: NetworkManager state is now CONNECTING Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6205] device (enp0s31f6): state change: prepare -> config (reason 'none', sys-iface-state: 'managed') Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6219] device (enp0s31f6): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed') Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6227] dhcp4 (enp0s31f6): activation: beginning transaction (timeout in 45 seconds) Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6243] dhcp4 (enp0s31f6): dhclient started with pid 31439 Aug 01 22:43:31 t2trvs01 dhclient[31439]: DHCPREQUEST of 192.168.xx.xx on enp0s31f6 to 255.255.255.255 port 67 (xid=0x2178bd1f) Aug 01 22:43:31 t2trvs01 dhclient[31439]: DHCPACK of 192.168.xx.xx from 192.168.xx.xx Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6621] dhcp4 (enp0s31f6): address 192.168.10.46 Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6622] dhcp4 (enp0s31f6): plen 24 (255.255.255.0) Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6622] dhcp4 (enp0s31f6): gateway 192.168.xx.xx Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6622] dhcp4 (enp0s31f6): lease time 259200 Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6622] dhcp4 (enp0s31f6): nameserver '192.168.xx.xx' Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6622] dhcp4 (enp0s31f6): nameserver 'xx.xx.xx.xx' Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6622] dhcp4 (enp0s31f6): nameserver '142.4.204.111' Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6622] dhcp4 (enp0s31f6): nameserver '162.248.241.94' Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6622] dhcp4 (enp0s31f6): state changed unknown -> bound Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6631] device (enp0s31f6): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed') Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6636] device (enp0s31f6): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed') Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6638] device (enp0s31f6): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed') Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.6638] manager: NetworkManager state is now CONNECTED_LOCAL Aug 01 22:43:31 t2trvs01 dhclient[31439]: bound to 192.168.xx.xx -- renewal in 110815 seconds. Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.7023] manager: NetworkManager state is now CONNECTED_SITE Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.7024] policy: set 'netplan-enp0s31f6' (enp0s31f6) as default for IPv4 routing and DNS Aug 01 22:43:31 t2trvs01 NetworkManager[1358]: [1533177811.7026] device (enp0s31f6): Activation: successful, device activated. Aug 01 22:47:21 t2trvs01 NetworkManager[1358]: [1533178041.6955] manager: NetworkManager state is now CONNECTED_GLOBAL Aug 01 23:42:46 t2trvs01 NetworkManager[1358]: [1533181366.0602] device (enp0s31f6): state change: activated -> deactivating (reason 'user-requested', sys-iface-state: 'managed') Aug 01 23:42:46 t2trvs01 NetworkManager[1358]: [1533181366.0603] manager: NetworkManager state is now DISCONNECTING Aug 01 23:42:46 t2trvs01 NetworkManager[1358]: [1533181366.1131] audit: op="device-disconnect" interface="enp0s31f6" ifindex=2 pid=7083 uid=0 result="success" Aug 01 23:42:46 t2trvs01 NetworkManager[1358]: [1533181366.1132] device (enp0s31f6): state change: deactivating -> disconnected (reason 'user-requested', sys-iface-state: 'managed') Aug 01 23:42:46 t2trvs01 NetworkManager[1358]: [1533181366.1459] dhcp4 (enp0s31f6): canceled DHCP transaction, DHCP client pid 31439 Aug 01 23:42:46 t2trvs01 NetworkManager[1358]: [1533181366.1459] dhcp4 (enp0s31f6): state changed bound -> done Aug 01 23:42:46 t2trvs01 NetworkManager[1358]: [1533181366.1467] manager: NetworkManager state is now DISCONNECTED Aug 01 23:42:46 t2trvs01 systemd[1]: Stopping Network Manager... Aug 01 23:42:46 t2trvs01 NetworkManager[1358]: [1533181366.1692] caught SIGTERM, shutting down normally. Aug 01 23:42:46 t2trvs01 NetworkManager[1358]: [1533181366.1780] exiting (success) Aug 01 23:42:46 t2trvs01 systemd[1]: Stopped Network Manager. Aug 01 23:42:46 t2trvs01 systemd[1]: Starting Network Manager... Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.2577] NetworkManager (version 1.10.6) is starting... (after a restart) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.2578] Read config: /etc/NetworkManager/NetworkManager.conf (lib: 10-dns-resolved.conf, 20-connectivity-ubuntu.conf, no-mac-addr-change Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.2601] manager[0x55c763131060]: monitoring kernel firmware directory '/lib/firmware'. Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.2602] monitoring ifupdown state file '/run/network/ifstate'. Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5280] hostname: hostname: using hostnamed Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5281] hostname: hostname changed from (none) to "t2trvs01" Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5286] dns-mgr[0x55c76314b140]: init: dns=systemd-resolved, rc-manager=symlink, plugin=systemd-resolved Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5297] manager[0x55c763131060]: rfkill: WiFi hardware radio set enabled Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5297] manager[0x55c763131060]: rfkill: WWAN hardware radio set enabled Aug 01 23:42:46 t2trvs01 systemd[1]: Started Network Manager. Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5351] init! Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5354] interface-parser: parsing file /etc/network/interfaces Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5355] interface-parser: finished parsing file /etc/network/interfaces Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5355] management mode: unmanaged Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5361] devices added (path: /sys/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6, iface: enp0s31f6) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5362] device added (path: /sys/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6, iface: enp0s31f6): no ifupdown configuration found. Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5362] devices added (path: /sys/devices/virtual/net/lo, iface: lo) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5362] device added (path: /sys/devices/virtual/net/lo, iface: lo): no ifupdown configuration found. Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5362] end _init. Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5363] settings: loaded plugin ifupdown: (C) 2008 Canonical Ltd. To report bugs please use the NetworkManager mailing list. (/usr/lib/ Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5363] settings: loaded plugin keyfile: (c) 2007 - 2016 Red Hat, Inc. To report bugs please use the NetworkManager mailing list. Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5364] (1662423808) ... get_connections. Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5364] (1662423808) ... get_connections (managed=false): return empty list. Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5548] keyfile: new connection /run/NetworkManager/system-connections/netplan-enp0s31f6 (0fb5685d-476e-39b6-8090-4f5b35b00deb,"netplan- Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5551] get unmanaged devices count: 0 Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5551] manager: rfkill: WiFi enabled by radio killswitch; enabled by state file Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5552] manager: rfkill: WWAN enabled by radio killswitch; enabled by state file Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5552] manager: Networking is enabled by state file Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5553] dhcp-init: Using DHCP client 'dhclient' Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5554] Loaded device plugin: NMBondDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5554] Loaded device plugin: NMBridgeDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5554] Loaded device plugin: NMDummyDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5555] Loaded device plugin: NMEthernetDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5555] Loaded device plugin: NMInfinibandDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5555] Loaded device plugin: NMIPTunnelDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5555] Loaded device plugin: NMMacsecDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5556] Loaded device plugin: NMMacvlanDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5556] Loaded device plugin: NMPppDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5556] Loaded device plugin: NMTunDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5556] Loaded device plugin: NMVethDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5557] Loaded device plugin: NMVlanDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5557] Loaded device plugin: NMVxlanDeviceFactory (internal) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5561] Loaded device plugin: NMAtmManager (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-adsl.so) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5571] Loaded device plugin: NMBluezManager (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-bluetooth.so) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5579] Loaded device plugin: NMTeamFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-team.so) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5582] Loaded device plugin: NMWifiFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wifi.so) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5585] Loaded device plugin: NMWwanFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wwan.so) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5595] device (lo): carrier: link connected Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5602] manager: (lo): new Generic device (/org/freedesktop/NetworkManager/Devices/1) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5606] device (enp0s31f6): carrier: link connected Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5615] manager: (enp0s31f6): new Ethernet device (/org/freedesktop/NetworkManager/Devices/2) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5625] device (enp0s31f6): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external') Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5710] modem-manager: ModemManager available Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5743] device (enp0s31f6): state change: unavailable -> disconnected (reason 'none', sys-iface-state: 'managed') Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5818] policy: auto-activating connection 'netplan-enp0s31f6' Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5829] device (enp0s31f6): Activation: starting connection 'netplan-enp0s31f6' (0fb5685d-476e-39b6-8090-4f5b35b00deb) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5830] device (enp0s31f6): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed') Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5831] manager: NetworkManager state is now CONNECTING Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5833] device (enp0s31f6): state change: prepare -> config (reason 'none', sys-iface-state: 'managed') Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5837] device (enp0s31f6): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed') Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5842] dhcp4 (enp0s31f6): activation: beginning transaction (timeout in 45 seconds) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.5852] dhcp4 (enp0s31f6): dhclient started with pid 7177 Aug 01 23:42:46 t2trvs01 dhclient[7177]: DHCPREQUEST of 192.168.xx.xx on enp0s31f6 to 255.255.255.255 port 67 (xid=0x261e23d6) Aug 01 23:42:46 t2trvs01 dhclient[7177]: DHCPACK of 192.168.xx.xx from 192.168.xx.xx Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6221] dhcp4 (enp0s31f6): address 192.168.10.46 Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6222] dhcp4 (enp0s31f6): plen 24 (255.255.255.0) Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6222] dhcp4 (enp0s31f6): gateway 192.168.10.1 Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6222] dhcp4 (enp0s31f6): lease time 259200 Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6222] dhcp4 (enp0s31f6): nameserver '192.168.10.1' Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6222] dhcp4 (enp0s31f6): nameserver '8.8.8.8' Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6222] dhcp4 (enp0s31f6): nameserver '142.4.204.111' Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6222] dhcp4 (enp0s31f6): nameserver '162.248.241.94' Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6222] dhcp4 (enp0s31f6): state changed unknown -> bound Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6232] device (enp0s31f6): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed') Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6237] device (enp0s31f6): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed') Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6238] device (enp0s31f6): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed') Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6239] manager: NetworkManager state is now CONNECTED_LOCAL Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6518] manager: NetworkManager state is now CONNECTED_SITE Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6518] policy: set 'netplan-enp0s31f6' (enp0s31f6) as default for IPv4 routing and DNS Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6520] device (enp0s31f6): Activation: successful, device activated. Aug 01 23:42:46 t2trvs01 NetworkManager[7132]: [1533181366.6522] manager: startup complete Aug 01 23:42:46 t2trvs01 dhclient[7177]: bound to 192.168.xx.xx -- renewal in 101476 seconds. Aug 01 23:42:58 t2trvs01 NetworkManager[7132]: [1533181378.7439] manager: NetworkManager state is now CONNECTED_GLOBAL Aug 01 23:43:12 t2trvs01 NetworkManager[7132]: [1533181392.2369] device (enp0s31f6): state change: activated -> deactivating (reason 'user-requested', sys-iface-state: 'managed') Aug 01 23:43:12 t2trvs01 NetworkManager[7132]: [1533181392.2370] manager: NetworkManager state is now DISCONNECTING Aug 01 23:43:12 t2trvs01 NetworkManager[7132]: [1533181392.2859] audit: op="device-disconnect" interface="enp0s31f6" ifindex=2 pid=7281 uid=0 result="success" Aug 01 23:43:12 t2trvs01 NetworkManager[7132]: [1533181392.2861] device (enp0s31f6): state change: deactivating -> disconnected (reason 'user-requested', sys-iface-state: 'managed') Aug 01 23:43:12 t2trvs01 NetworkManager[7132]: [1533181392.3187] dhcp4 (enp0s31f6): canceled DHCP transaction, DHCP client pid 7177 Aug 01 23:43:12 t2trvs01 NetworkManager[7132]: [1533181392.3187] dhcp4 (enp0s31f6): state changed bound -> done Aug 01 23:43:12 t2trvs01 NetworkManager[7132]: [1533181392.3197] manager: NetworkManager state is now DISCONNECTED Aug 01 23:43:12 t2trvs01 systemd[1]: Stopping Network Manager... Aug 01 23:43:12 t2trvs01 NetworkManager[7132]: [1533181392.3436] caught SIGTERM, shutting down normally. Aug 01 23:43:12 t2trvs01 NetworkManager[7132]: [1533181392.3481] exiting (success) Aug 01 23:43:12 t2trvs01 systemd[1]: Starting Network Manager... Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4044] NetworkManager (version 1.10.6) is starting... (after a restart) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4044] Read config: /etc/NetworkManager/NetworkManager.conf (lib: 10-dns-resolved.conf, 20-connectivity-ubuntu.conf, no-mac-addr-change Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4069] manager[0x563cf46e2060]: monitoring kernel firmware directory '/lib/firmware'. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4069] monitoring ifupdown state file '/run/network/ifstate'. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4078] hostname: hostname: using hostnamed Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4078] hostname: hostname changed from (none) to "t2trvs01" Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4079] dns-mgr[0x563cf46fd940]: init: dns=systemd-resolved, rc-manager=symlink, plugin=systemd-resolved Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4083] manager[0x563cf46e2060]: rfkill: WiFi hardware radio set enabled Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4083] manager[0x563cf46e2060]: rfkill: WWAN hardware radio set enabled Aug 01 23:43:12 t2trvs01 systemd[1]: Started Network Manager. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4100] init! Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4101] interface-parser: parsing file /etc/network/interfaces Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4101] interface-parser: finished parsing file /etc/network/interfaces Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4102] management mode: unmanaged Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4103] devices added (path: /sys/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6, iface: enp0s31f6) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4103] device added (path: /sys/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6, iface: enp0s31f6): no ifupdown configuration found. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4104] devices added (path: /sys/devices/virtual/net/lo, iface: lo) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4104] device added (path: /sys/devices/virtual/net/lo, iface: lo): no ifupdown configuration found. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4104] end _init. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4104] settings: loaded plugin ifupdown: (C) 2008 Canonical Ltd. To report bugs please use the NetworkManager mailing list. (/usr/lib/ Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4104] settings: loaded plugin keyfile: (c) 2007 - 2016 Red Hat, Inc. To report bugs please use the NetworkManager mailing list. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4104] (-193871680) ... get_connections. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4104] (-193871680) ... get_connections (managed=false): return empty list. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4156] keyfile: new connection /run/NetworkManager/system-connections/netplan-enp0s31f6 (0fb5685d-476e-39b6-8090-4f5b35b00deb,"netplan- Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4157] get unmanaged devices count: 0 Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4157] manager: rfkill: WiFi enabled by radio killswitch; enabled by state file Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4157] manager: rfkill: WWAN enabled by radio killswitch; enabled by state file Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4158] manager: Networking is enabled by state file Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4158] dhcp-init: Using DHCP client 'dhclient' Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4158] Loaded device plugin: NMBondDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4158] Loaded device plugin: NMBridgeDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4158] Loaded device plugin: NMDummyDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4159] Loaded device plugin: NMEthernetDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4159] Loaded device plugin: NMInfinibandDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4159] Loaded device plugin: NMIPTunnelDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4159] Loaded device plugin: NMMacsecDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4159] Loaded device plugin: NMMacvlanDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4159] Loaded device plugin: NMPppDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4159] Loaded device plugin: NMTunDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4159] Loaded device plugin: NMVethDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4159] Loaded device plugin: NMVlanDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4159] Loaded device plugin: NMVxlanDeviceFactory (internal) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4161] Loaded device plugin: NMAtmManager (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-adsl.so) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4165] Loaded device plugin: NMBluezManager (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-bluetooth.so) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4168] Loaded device plugin: NMTeamFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-team.so) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4169] Loaded device plugin: NMWifiFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wifi.so) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4170] Loaded device plugin: NMWwanFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wwan.so) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4175] device (lo): carrier: link connected Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4178] manager: (lo): new Generic device (/org/freedesktop/NetworkManager/Devices/1) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4180] device (enp0s31f6): carrier: link connected Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4183] manager: (enp0s31f6): new Ethernet device (/org/freedesktop/NetworkManager/Devices/2) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4188] device (enp0s31f6): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external') Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4240] device (enp0s31f6): state change: unavailable -> disconnected (reason 'none', sys-iface-state: 'managed') Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4246] policy: auto-activating connection 'netplan-enp0s31f6' Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4252] device (enp0s31f6): Activation: starting connection 'netplan-enp0s31f6' (0fb5685d-476e-39b6-8090-4f5b35b00deb) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4254] device (enp0s31f6): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed') Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4254] manager: NetworkManager state is now CONNECTING Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4269] device (enp0s31f6): state change: prepare -> config (reason 'none', sys-iface-state: 'managed') Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4272] device (enp0s31f6): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed') Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4277] dhcp4 (enp0s31f6): activation: beginning transaction (timeout in 45 seconds) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4297] dhcp4 (enp0s31f6): dhclient started with pid 7353 Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4344] modem-manager: ModemManager available Aug 01 23:43:12 t2trvs01 dhclient[7353]: DHCPREQUEST of 192.168.xx.xx on enp0s31f6 to 255.255.255.255 port 67 (xid=0x1854f9c9) Aug 01 23:43:12 t2trvs01 dhclient[7353]: DHCPACK of 192.168.xx.xx from 192.168.xx.xx Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4697] dhcp4 (enp0s31f6): address 192.168.10.46 Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4698] dhcp4 (enp0s31f6): plen 24 (255.255.255.0) Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4698] dhcp4 (enp0s31f6): gateway 192.168.10.1 Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4698] dhcp4 (enp0s31f6): lease time 259200 Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4698] dhcp4 (enp0s31f6): nameserver '192.168.10.1' Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4698] dhcp4 (enp0s31f6): nameserver '8.8.8.8' Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4698] dhcp4 (enp0s31f6): nameserver '142.4.204.111' Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4698] dhcp4 (enp0s31f6): nameserver '162.248.241.94' Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4698] dhcp4 (enp0s31f6): state changed unknown -> bound Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4708] device (enp0s31f6): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed') Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4713] device (enp0s31f6): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed') Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4715] device (enp0s31f6): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed') Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4715] manager: NetworkManager state is now CONNECTED_LOCAL Aug 01 23:43:12 t2trvs01 dhclient[7353]: bound to 192.168.xx.xx -- renewal in 104437 seconds. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4765] manager: NetworkManager state is now CONNECTED_SITE Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4766] policy: set 'netplan-enp0s31f6' (enp0s31f6) as default for IPv4 routing and DNS Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4767] device (enp0s31f6): Activation: successful, device activated. Aug 01 23:43:12 t2trvs01 NetworkManager[7331]: [1533181392.4770] manager: startup complete Aug 01 23:43:24 t2trvs01 NetworkManager[7331]: [1533181404.5666] manager: NetworkManager state is now CONNECTED_GLOBAL Aug 02 00:03:17 t2trvs01 NetworkManager[7331]: [1533182597.4758] modem-manager: ModemManager no longer available Aug 02 00:03:17 t2trvs01 NetworkManager[7331]: [1533182597.4925] error requesting auth for org.freedesktop.NetworkManager.wifi.share.open: Authorization check failed: Message recipient disconne Aug 02 00:03:17 t2trvs01 NetworkManager[7331]: [1533182597.5086] error requesting auth for org.freedesktop.NetworkManager.wifi.share.protected: Authorization check failed: Refusing activation, Aug 02 00:03:17 t2trvs01 NetworkManager[7331]: [1533182597.5087] error requesting auth for org.freedesktop.NetworkManager.wifi.share.open: Authorization check failed: Refusing activation, D-Bus Aug 02 00:03:19 t2trvs01 systemd[1]: Stopping Network Manager... Aug 02 00:03:19 t2trvs01 NetworkManager[7331]: [1533182599.4298] caught SIGTERM, shutting down normally. Aug 02 00:03:19 t2trvs01 NetworkManager[7331]: [1533182599.4796] exiting (success) Aug 02 00:03:19 t2trvs01 systemd[1]: Stopped Network Manager. -- Reboot -- Aug 02 00:03:52 t2trvs01 systemd[1]: Starting Network Manager... Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.3171] NetworkManager (version 1.10.6) is starting... (for the first time) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.3171] Read config: /etc/NetworkManager/NetworkManager.conf (lib: 10-dns-resolved.conf, 20-connectivity-ubuntu.conf, no-mac-addr-change Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.3200] manager[0x5579dd219070]: monitoring kernel firmware directory '/lib/firmware'. Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.3200] monitoring ifupdown state file '/run/network/ifstate'. Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9153] hostname: hostname: using hostnamed Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9153] hostname: hostname changed from (none) to "t2trvs01" Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9155] dns-mgr[0x5579dd234140]: init: dns=systemd-resolved, rc-manager=symlink, plugin=systemd-resolved Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9159] manager[0x5579dd219070]: rfkill: WiFi hardware radio set enabled Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9159] manager[0x5579dd219070]: rfkill: WWAN hardware radio set enabled Aug 02 00:03:52 t2trvs01 systemd[1]: Started Network Manager. Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9352] init! Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9353] interface-parser: parsing file /etc/network/interfaces Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9353] interface-parser: finished parsing file /etc/network/interfaces Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9353] management mode: unmanaged Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9355] devices added (path: /sys/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6, iface: enp0s31f6) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9355] device added (path: /sys/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6, iface: enp0s31f6): no ifupdown configuration found. Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9356] devices added (path: /sys/devices/virtual/net/lo, iface: lo) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9356] device added (path: /sys/devices/virtual/net/lo, iface: lo): no ifupdown configuration found. Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9356] end _init. Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9356] settings: loaded plugin ifupdown: (C) 2008 Canonical Ltd. To report bugs please use the NetworkManager mailing list. (/usr/lib/ Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9356] settings: loaded plugin keyfile: (c) 2007 - 2016 Red Hat, Inc. To report bugs please use the NetworkManager mailing list. Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9356] (-584768320) ... get_connections. Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9357] (-584768320) ... get_connections (managed=false): return empty list. Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9412] keyfile: new connection /run/NetworkManager/system-connections/netplan-enp0s31f6 (0fb5685d-476e-39b6-8090-4f5b35b00deb,"netplan- Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9414] get unmanaged devices count: 0 Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9414] manager: rfkill: WiFi enabled by radio killswitch; enabled by state file Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9414] manager: rfkill: WWAN enabled by radio killswitch; enabled by state file Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9414] manager: Networking is enabled by state file Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9415] dhcp-init: Using DHCP client 'dhclient' Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9417] Loaded device plugin: NMBondDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9417] Loaded device plugin: NMBridgeDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9417] Loaded device plugin: NMDummyDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9418] Loaded device plugin: NMEthernetDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9418] Loaded device plugin: NMInfinibandDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9418] Loaded device plugin: NMIPTunnelDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9418] Loaded device plugin: NMMacsecDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9418] Loaded device plugin: NMMacvlanDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9418] Loaded device plugin: NMPppDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9418] Loaded device plugin: NMTunDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9418] Loaded device plugin: NMVethDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9418] Loaded device plugin: NMVlanDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9418] Loaded device plugin: NMVxlanDeviceFactory (internal) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9420] Loaded device plugin: NMAtmManager (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-adsl.so) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9429] Loaded device plugin: NMBluezManager (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-bluetooth.so) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9437] Loaded device plugin: NMTeamFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-team.so) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9439] Loaded device plugin: NMWifiFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wifi.so) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9441] Loaded device plugin: NMWwanFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wwan.so) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9447] device (lo): carrier: link connected Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9451] manager: (lo): new Generic device (/org/freedesktop/NetworkManager/Devices/1) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9456] manager: (enp0s31f6): new Ethernet device (/org/freedesktop/NetworkManager/Devices/2) Aug 02 00:03:52 t2trvs01 NetworkManager[1171]: [1533182632.9461] device (enp0s31f6): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external') Aug 02 00:03:53 t2trvs01 NetworkManager[1171]: [1533182633.1377] modem-manager: ModemManager available Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.1700] device (enp0s31f6): carrier: link connected Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.1701] device (enp0s31f6): state change: unavailable -> disconnected (reason 'carrier-changed', sys-iface-state: 'managed') Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.1706] policy: auto-activating connection 'netplan-enp0s31f6' Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.1712] device (enp0s31f6): Activation: starting connection 'netplan-enp0s31f6' (0fb5685d-476e-39b6-8090-4f5b35b00deb) Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.1714] device (enp0s31f6): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed') Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.1714] manager: NetworkManager state is now CONNECTING Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.1716] device (enp0s31f6): state change: prepare -> config (reason 'none', sys-iface-state: 'managed') Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.1720] device (enp0s31f6): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed') Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.1722] dhcp4 (enp0s31f6): activation: beginning transaction (timeout in 45 seconds) Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2219] dhcp4 (enp0s31f6): dhclient started with pid 1321 Aug 02 00:03:56 t2trvs01 dhclient[1321]: DHCPREQUEST of 192.168.xx.xx on enp0s31f6 to 255.255.255.255 port 67 (xid=0x61dba9ac) Aug 02 00:03:56 t2trvs01 dhclient[1321]: DHCPACK of 192.168.xx.xx from 192.168.xx.xx Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2659] dhcp4 (enp0s31f6): address 192.168.10.46 Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2659] dhcp4 (enp0s31f6): plen 24 (255.255.255.0) Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2659] dhcp4 (enp0s31f6): gateway 192.168.10.1 Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2659] dhcp4 (enp0s31f6): lease time 259200 Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2659] dhcp4 (enp0s31f6): nameserver '192.168.10.1' Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2659] dhcp4 (enp0s31f6): nameserver '8.8.8.8' Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2659] dhcp4 (enp0s31f6): nameserver '142.4.204.111' Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2659] dhcp4 (enp0s31f6): nameserver '162.248.241.94' Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2659] dhcp4 (enp0s31f6): state changed unknown -> bound Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2665] device (enp0s31f6): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed') Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2669] device (enp0s31f6): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed') Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2670] device (enp0s31f6): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed') Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2670] manager: NetworkManager state is now CONNECTED_LOCAL Aug 02 00:03:56 t2trvs01 dhclient[1321]: bound to 192.168.10.46 -- renewal in 125601 seconds. Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2722] manager: NetworkManager state is now CONNECTED_SITE Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2722] policy: set 'netplan-enp0s31f6' (enp0s31f6) as default for IPv4 routing and DNS Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2725] device (enp0s31f6): Activation: successful, device activated. Aug 02 00:03:56 t2trvs01 NetworkManager[1171]: [1533182636.2727] manager: startup complete Aug 02 00:04:02 t2trvs01 NetworkManager[1171]: [1533182642.4517] manager: NetworkManager state is now CONNECTED_GLOBAL Aug 02 00:07:19 t2trvs01 NetworkManager[1171]: [1533182839.7583] modem-manager: ModemManager no longer available -- Reboot -- Aug 02 00:08:11 t2trvs01 systemd[1]: Starting Network Manager... Aug 02 00:08:11 t2trvs01 NetworkManager[1604]: [1533182891.8332] NetworkManager (version 1.10.6) is starting... (for the first time) Aug 02 00:08:11 t2trvs01 NetworkManager[1604]: [1533182891.8333] Read config: /etc/NetworkManager/NetworkManager.conf (lib: 10-dns-resolved.conf, 20-connectivity-ubuntu.conf, no-mac-addr-change Aug 02 00:08:11 t2trvs01 NetworkManager[1604]: [1533182891.8361] manager[0x55cc730f3070]: monitoring kernel firmware directory '/lib/firmware'. Aug 02 00:08:11 t2trvs01 NetworkManager[1604]: [1533182891.8362] monitoring ifupdown state file '/run/network/ifstate'. Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2347] hostname: hostname: using hostnamed Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2347] hostname: hostname changed from (none) to "t2trvs01" Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2350] dns-mgr[0x55cc7310e140]: init: dns=systemd-resolved, rc-manager=symlink, plugin=systemd-resolved Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2355] manager[0x55cc730f3070]: rfkill: WiFi hardware radio set enabled Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2355] manager[0x55cc730f3070]: rfkill: WWAN hardware radio set enabled Aug 02 00:08:12 t2trvs01 systemd[1]: Started Network Manager. Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2564] init! Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2566] interface-parser: parsing file /etc/network/interfaces Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2566] interface-parser: finished parsing file /etc/network/interfaces Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2566] management mode: unmanaged Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2568] devices added (path: /sys/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6, iface: enp0s31f6) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2568] device added (path: /sys/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6, iface: enp0s31f6): no ifupdown configuration found. Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2568] devices added (path: /sys/devices/virtual/net/lo, iface: lo) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2569] device added (path: /sys/devices/virtual/net/lo, iface: lo): no ifupdown configuration found. Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2569] end _init. Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2569] settings: loaded plugin ifupdown: (C) 2008 Canonical Ltd. To report bugs please use the NetworkManager mailing list. (/usr/lib/ Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2569] settings: loaded plugin keyfile: (c) 2007 - 2016 Red Hat, Inc. To report bugs please use the NetworkManager mailing list. Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2569] (1930611904) ... get_connections. Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2569] (1930611904) ... get_connections (managed=false): return empty list. Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2623] keyfile: new connection /run/NetworkManager/system-connections/netplan-enp0s31f6 (0fb5685d-476e-39b6-8090-4f5b35b00deb,"netplan- Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2624] get unmanaged devices count: 0 Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2625] manager: rfkill: WiFi enabled by radio killswitch; enabled by state file Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2625] manager: rfkill: WWAN enabled by radio killswitch; enabled by state file Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2625] manager: Networking is enabled by state file Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2626] dhcp-init: Using DHCP client 'dhclient' Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2628] Loaded device plugin: NMBondDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2628] Loaded device plugin: NMBridgeDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2628] Loaded device plugin: NMDummyDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2629] Loaded device plugin: NMEthernetDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2629] Loaded device plugin: NMInfinibandDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2629] Loaded device plugin: NMIPTunnelDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2629] Loaded device plugin: NMMacsecDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2629] Loaded device plugin: NMMacvlanDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2629] Loaded device plugin: NMPppDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2629] Loaded device plugin: NMTunDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2629] Loaded device plugin: NMVethDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2629] Loaded device plugin: NMVlanDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2630] Loaded device plugin: NMVxlanDeviceFactory (internal) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2632] Loaded device plugin: NMAtmManager (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-adsl.so) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2643] Loaded device plugin: NMBluezManager (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-bluetooth.so) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2652] Loaded device plugin: NMTeamFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-team.so) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2655] Loaded device plugin: NMWifiFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wifi.so) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2656] Loaded device plugin: NMWwanFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wwan.so) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2662] device (lo): carrier: link connected Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2666] manager: (lo): new Generic device (/org/freedesktop/NetworkManager/Devices/1) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2673] manager: (enp0s31f6): new Ethernet device (/org/freedesktop/NetworkManager/Devices/2) Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.2678] device (enp0s31f6): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external') Aug 02 00:08:12 t2trvs01 NetworkManager[1604]: [1533182892.4580] modem-manager: ModemManager available Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.3764] device (enp0s31f6): carrier: link connected Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.3768] device (enp0s31f6): state change: unavailable -> disconnected (reason 'carrier-changed', sys-iface-state: 'managed') Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.3773] policy: auto-activating connection 'netplan-enp0s31f6' Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.3779] device (enp0s31f6): Activation: starting connection 'netplan-enp0s31f6' (0fb5685d-476e-39b6-8090-4f5b35b00deb) Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.3781] device (enp0s31f6): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed') Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.3782] manager: NetworkManager state is now CONNECTING Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.3785] device (enp0s31f6): state change: prepare -> config (reason 'none', sys-iface-state: 'managed') Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.3788] device (enp0s31f6): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed') Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.3793] dhcp4 (enp0s31f6): activation: beginning transaction (timeout in 45 seconds) Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4254] dhcp4 (enp0s31f6): dhclient started with pid 1893 Aug 02 00:08:15 t2trvs01 dhclient[1893]: DHCPREQUEST of 192.168.10.46 on enp0s31f6 to 255.255.255.255 port 67 (xid=0xa5d3354) Aug 02 00:08:15 t2trvs01 dhclient[1893]: DHCPACK of 192.168.xx.xx from 192.168.xx.xx Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4614] dhcp4 (enp0s31f6): address 192.168.10.46 Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4614] dhcp4 (enp0s31f6): plen 24 (255.255.255.0) Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4614] dhcp4 (enp0s31f6): gateway 192.168.10.1 Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4614] dhcp4 (enp0s31f6): lease time 259200 Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4614] dhcp4 (enp0s31f6): nameserver '192.168.10.1' Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4614] dhcp4 (enp0s31f6): nameserver '8.8.8.8' Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4614] dhcp4 (enp0s31f6): nameserver '142.4.204.111' Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4614] dhcp4 (enp0s31f6): nameserver '162.248.241.94' Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4614] dhcp4 (enp0s31f6): state changed unknown -> bound Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4621] device (enp0s31f6): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed') Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: [1533182895.4625] device (enp0s31f6): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed') Aug 02 00:08:15 t2trvs01 NetworkManager[1604]: