[ 1921.411046][T23808] br0: port 1(dummy0) entered blocking state
[ 1921.411244][T23808] br0: port 1(dummy0) entered disabled state
[ 1921.411406][T23808] dummy0: entered allmulticast mode
[ 1921.413230][T23808] dummy0: entered promiscuous mode
[ 1921.442008][T23809] br0: port 1(dummy0) entered blocking state
[ 1921.442419][T23809] br0: port 1(dummy0) entered forwarding state
[ 1923.701254][   T12] dummy0: left allmulticast mode
[ 1923.702285][   T12] dummy0: left promiscuous mode
[ 1923.702701][   T12] br0: port 1(dummy0) entered disabled state