[ 1967.359550][T13704] br0: port 1(dummy0) entered blocking state
[ 1967.359768][T13704] br0: port 1(dummy0) entered disabled state
[ 1967.359991][T13704] dummy0: entered allmulticast mode
[ 1967.361488][T13704] dummy0: entered promiscuous mode
[ 1967.383104][T13705] br0: port 1(dummy0) entered blocking state
[ 1967.383495][T13705] br0: port 1(dummy0) entered forwarding state
[ 1969.315879][   T67] dummy0: left allmulticast mode
[ 1969.316909][   T67] dummy0: left promiscuous mode
[ 1969.317138][   T67] br0: port 1(dummy0) entered disabled state