edlang@lettuce:~$ dmesg | grep br0
[    8.835649] ADDRCONF(NETDEV_UP): br0: link is not ready
[   11.250770] br0: port 1(eth0) entering forwarding state
[   11.250775] br0: port 1(eth0) entering forwarding state
[   11.251101] ADDRCONF(NETDEV_CHANGE): br0: link becomes ready
[   13.750557] ADDRCONF(NETDEV_UP): virbr0: link is not ready
[   16.246816] br0: port 2(vnet0) entering forwarding state
[   16.246820] br0: port 2(vnet0) entering forwarding state
[   17.034579] br0: port 3(vnet1) entering forwarding state
[   17.034583] br0: port 3(vnet1) entering forwarding state
[   17.886840] br0: port 4(vnet2) entering forwarding state
[   17.886845] br0: port 4(vnet2) entering forwarding state
[   21.520008] br0: no IPv6 routers present
[   26.272019] br0: port 1(eth0) entering forwarding state
[   31.264071] br0: port 2(vnet0) entering forwarding state
[   32.064046] br0: port 3(vnet1) entering forwarding state
[   32.928026] br0: port 4(vnet2) entering forwarding state