vladimir@vladimir:~$ sudo stop network-manager
[sudo] password for vladimir: 
network-manager stop/waiting
vladimir@vladimir:~$ sudo stop network-manager
stop: Unknown instance: 
vladimir@vladimir:~$ sudo sh -c "NM_PPP_DEBUG=true NetworkManager --no-daemon"
NetworkManager: <info>  starting...
NetworkManager: <info>  modem-manager is now available
NetworkManager:    SCPlugin-Ifupdown: init!
NetworkManager:    SCPlugin-Ifupdown: update_system_hostname
NetworkManager:    SCPluginIfupdown: management mode: managed
NetworkManager:    SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:1c.1/0000:02:00.0/net/eth0, iface: eth0)
NetworkManager:    SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:1c.1/0000:02:00.0/net/eth0, iface: eth0): no ifupdown configuration found.
NetworkManager:    SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/lo, iface: lo)
NetworkManager:    SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/lo, iface: lo): no ifupdown configuration found.
NetworkManager:    SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/vboxnet0, iface: vboxnet0)
NetworkManager:    SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/vboxnet0, iface: vboxnet0): no ifupdown configuration found.
NetworkManager:    SCPlugin-Ifupdown: end _init.
NetworkManager: Loaded plugin ifupdown: (C) 2008 Canonical Ltd.  To report bugs please use the NetworkManager mailing list.
NetworkManager: Loaded plugin keyfile: (c) 2007 - 2008 Red Hat, Inc.  To report bugs please use the NetworkManager mailing list.
NetworkManager: <info>  Wireless now enabled by radio killswitch
NetworkManager:    SCPlugin-Ifupdown: (20190304) ... get_connections.
NetworkManager:    SCPlugin-Ifupdown: (20190304) connections count: 0
NetworkManager: <info>  (eth0): carrier is OFF
NetworkManager: <info>  (eth0): new Ethernet device (driver: 'atl1')
NetworkManager: <info>  (eth0): exported as /org/freedesktop/NetworkManager/Devices/0
NetworkManager: <info>  (eth0): now managed
NetworkManager: <info>  (eth0): device state change: 1 -> 2 (reason 2)
NetworkManager: <info>  (eth0): bringing up device.
NetworkManager: <info>  (eth0): preparing device.
NetworkManager: <info>  (eth0): deactivating device (reason: 2).
NetworkManager: <WARN>  device_creator(): /sys/devices/virtual/net/vboxnet0: couldn't determine device driver; ignoring...
NetworkManager: <info>  (eth0): carrier now ON (device state 2)
NetworkManager: <info>  (eth0): device state change: 2 -> 3 (reason 40)
NetworkManager: <WARN>  default_adapter_cb(): bluez error getting default adapter: The name org.bluez was not provided by any .service files
NetworkManager: <info>  Activation (eth0) starting connection 'DSL connection 1'
NetworkManager: <info>  (eth0): device state change: 3 -> 4 (reason 0)
NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) scheduled...
NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) started...
NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) scheduled...
NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) complete.
NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) starting...
NetworkManager: <info>  (eth0): device state change: 4 -> 5 (reason 0)
NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) successful.
NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) scheduled.
NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) complete.
NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) started...
NetworkManager: <info>  (eth0): device state change: 5 -> 7 (reason 0)
NetworkManager: <info>  Starting pppd connection
NetworkManager: <debug> [1256384514.311471] nm_ppp_manager_start(): Command line: /usr/sbin/pppd nodetach lock nodefaultroute debug user internet4g plugin rp-pppoe.so nic-eth0 rp_pppoe_service internet4g noauth nodeflate usepeerdns mru 1492 mtu 1492 lcp-echo-failure 3 lcp-echo-interval 20 ipparam /org/freedesktop/NetworkManager/PPP/0 plugin /usr/lib/pppd/2.4.4/nm-pppd-plugin.so
Plugin rp-pppoe.so loaded.
RP-PPPoE plugin version 3.8p compiled against pppd 2.4.5
Plugin /usr/lib/pppd/2.4.4/nm-pppd-plugin.so loaded.
** Message: nm-ppp-plugin: (plugin_init): initializing
NetworkManager: <debug> [1256384514.318421] nm_ppp_manager_start(): ppp started with pid 2761
NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP6 Configure Get) scheduled...
NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) complete.
NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP6 Configure Get) started...
NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP6 Configure Get) complete.
** Message: nm-ppp-plugin: (nm_phasechange): status 3 / phase 'serial connection'
Send PPPOE Discovery V1T1 PADI session 0x0 length 12
 dst ff:ff:ff:ff:ff:ff  src 0:1d:60:f7:be:e6
 [service-name] [host-uniq  c9 0a 00 00]
Recv PPPOE Discovery V1T1 PADO session 0x0 length 45
 dst 0:1d:60:f7:be:e6  src 0:4:d8:50:9d:5f
 [AC-name GU3D532024P] [service-name Wireless Broadband] [host-uniq  c9 0a 00 00]
Send PPPOE Discovery V1T1 PADR session 0x0 length 12
 dst 0:4:d8:50:9d:5f  src 0:1d:60:f7:be:e6
 [service-name] [host-uniq  c9 0a 00 00]
Recv PPPOE Discovery V1T1 PADS session 0xe length 12
 dst 0:1d:60:f7:be:e6  src 0:4:d8:50:9d:5f
 [service-name] [host-uniq  c9 0a 00 00]
PADS: Service-Name: ''
PPP session is 14
Connected to 00:04:d8:50:9d:5f via interface eth0
using channel 1
Using interface ppp0
Connect: ppp0 <--> eth0
** Message: nm-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
sent [LCP ConfReq id=0x1 <mru 1492> <magic 0x26d14f9f>]
NetworkManager:    SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
NetworkManager:    SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
rcvd [LCP ConfReq id=0x1 <auth chap MD5> <magic 0x13e203f3>]
sent [LCP ConfAck id=0x1 <auth chap MD5> <magic 0x13e203f3>]
rcvd [LCP ConfNak id=0x1 <mru 1500>]
sent [LCP ConfReq id=0x2 <magic 0x26d14f9f>]
rcvd [LCP ConfAck id=0x2 <magic 0x26d14f9f>]
sent [LCP EchoReq id=0x0 magic=0x26d14f9f]
** Message: nm-ppp-plugin: (nm_phasechange): status 6 / phase 'authenticate'
rcvd [CHAP Challenge id=0x1 <13630c5988b6ff0b8ec39f2c77532f28>, name = "ctx-mw23-ipw"]
** Message: nm-ppp-plugin: (get_credentials): passwd-hook, requesting credentials...
NetworkManager: <WARN>  pppd_timed_out(): Looks like pppd didn't initialize our dbus module
NetworkManager: <info>  (eth0): device state change: 7 -> 9 (reason 14)
NetworkManager: <info>  Marking connection 'DSL connection 1' invalid.
NetworkManager: <info>  Activation (eth0) failed.
NetworkManager: <info>  (eth0): device state change: 9 -> 3 (reason 0)
NetworkManager: <info>  (eth0): deactivating device (reason: 0).
NetworkManager: <debug> [1256384537.002570] ensure_killed(): waiting for ppp pid 2761 to exit
NetworkManager: <debug> [1256384537.084600] ensure_killed(): ppp pid 2761 cleaned up
NetworkManager:    SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)