[ 2040.180120][T10948] br0: port 1(dummy0) entered blocking state
[ 2040.180306][T10948] br0: port 1(dummy0) entered disabled state
[ 2040.181063][T10948] dummy0: entered allmulticast mode
[ 2040.181941][T10948] dummy0: entered promiscuous mode
[ 2040.219391][T10949] br0: port 1(dummy0) entered blocking state
[ 2040.219608][T10949] br0: port 1(dummy0) entered forwarding state
[ 2042.250884][   T12] dummy0: left allmulticast mode
[ 2042.251786][   T12] dummy0: left promiscuous mode
[ 2042.252021][   T12] br0: port 1(dummy0) entered disabled state