[ 1843.878048][ T3430] br0: port 1(dummy0) entered blocking state
[ 1843.878284][ T3430] br0: port 1(dummy0) entered disabled state
[ 1843.878498][ T3430] dummy0: entered allmulticast mode
[ 1843.879419][ T3430] dummy0: entered promiscuous mode
[ 1843.901938][ T3431] br0: port 1(dummy0) entered blocking state
[ 1843.902237][ T3431] br0: port 1(dummy0) entered forwarding state
[ 1845.771587][   T68] dummy0: left allmulticast mode
[ 1845.771771][   T68] dummy0: left promiscuous mode
[ 1845.771970][   T68] br0: port 1(dummy0) entered disabled state