[ 1941.249300][T20430] br0: port 1(dummy0) entered blocking state
[ 1941.249488][T20430] br0: port 1(dummy0) entered disabled state
[ 1941.249679][T20430] dummy0: entered allmulticast mode
[ 1941.250529][T20430] dummy0: entered promiscuous mode
[ 1941.279962][T20431] br0: port 1(dummy0) entered blocking state
[ 1941.280221][T20431] br0: port 1(dummy0) entered forwarding state
[ 1943.245384][   T70] dummy0: left allmulticast mode
[ 1943.246278][   T70] dummy0: left promiscuous mode
[ 1943.246507][   T70] br0: port 1(dummy0) entered disabled state