$ virsh net-info default
Name: default
UUID: 5db32803-fd1e-4876-98d8-da194f535c17
Active: yes
Persistent: yes
Autostart: yes
Bridge: virbr0
$ virsh net-dumpxml default
default
5db32803-fd1e-4876-98d8-da194f535c17
from the journal:
Okt 15 17:18:06 juergen kernel: virbr0: port 2(vnet0) entered blocking state
Okt 15 17:18:06 juergen kernel: virbr0: port 2(vnet0) entered disabled state
Okt 15 17:18:06 juergen kernel: device vnet0 entered promiscuous mode
Okt 15 17:18:06 juergen kernel: virbr0: port 2(vnet0) entered blocking state
Okt 15 17:18:06 juergen kernel: virbr0: port 2(vnet0) entered listening state
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7302] manager: (vnet0): new Tun device (/org/freedesktop/NetworkManager/Devices/8)
Okt 15 17:18:06 juergen systemd-udevd[7327]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7453] devices added (path: /sys/devices/virtual/net/vnet0, iface: vnet0)
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7454] device added (path: /sys/devices/virtual/net/vnet0, iface: vnet0): no ifupdown configuration found.
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7470] device (vnet0): state change: unmanaged -> unavailable (reason 'connection-assumed', sys-iface-state: 'external')
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7513] keyfile: add connection in-memory (697f6001-f8b1-4acc-bc69-b562c78a1372,"vnet0")
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7546] device (vnet0): state change: unavailable -> disconnected (reason 'connection-assumed', sys-iface-state: 'external')
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7570] device (vnet0): Activation: starting connection 'vnet0' (697f6001-f8b1-4acc-bc69-b562c78a1372)
Okt 15 17:18:06 juergen libvirtd[1706]: 2018-10-15 15:18:06.757+0000: 1776: error : virNetDevSendEthtoolIoctl:3071 : ethtool ioctl error: No such device
Okt 15 17:18:06 juergen libvirtd[1706]: 2018-10-15 15:18:06.758+0000: 1776: error : virNetDevSendEthtoolIoctl:3071 : ethtool ioctl error: No such device
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7576] device (vnet0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'external')
Okt 15 17:18:06 juergen libvirtd[1706]: 2018-10-15 15:18:06.758+0000: 1776: error : virNetDevSendEthtoolIoctl:3071 : ethtool ioctl error: No such device
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7588] device (vnet0): state change: prepare -> config (reason 'none', sys-iface-state: 'external')
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7595] device (vnet0): state change: config -> ip-config (reason 'none', sys-iface-state: 'external')
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7600] device (virbr0): bridge port vnet0 was attached
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7600] device (vnet0): Activation: connection 'vnet0' enslaved, continuing activation
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7605] device (vnet0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'external')
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7622] device (vnet0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'external')
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7627] device (vnet0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'external')
Okt 15 17:18:06 juergen NetworkManager[1653]: [1539616686.7787] device (vnet0): Activation: successful, device activated.
the virbr0.status file stays 'empty', the virbr0.macs file contains:
[
{
"domain": "win7",
"macs": [
"52:54:00:41:51:b4"
]
}
]
hth,
Jürgen