[ 2048.212588][T12742] br0: port 1(dummy0) entered blocking state
[ 2048.212772][T12742] br0: port 1(dummy0) entered disabled state
[ 2048.212918][T12742] dummy0: entered allmulticast mode
[ 2048.213772][T12742] dummy0: entered promiscuous mode
[ 2048.244263][T12743] br0: port 1(dummy0) entered blocking state
[ 2048.244461][T12743] br0: port 1(dummy0) entered forwarding state
[ 2050.203516][   T12] dummy0: left allmulticast mode
[ 2050.204396][   T12] dummy0: left promiscuous mode
[ 2050.204626][   T12] br0: port 1(dummy0) entered disabled state