[ 2133.608724][ T4640] br0: port 1(dummy0) entered blocking state
[ 2133.609032][ T4640] br0: port 1(dummy0) entered disabled state
[ 2133.609306][ T4640] dummy0: entered allmulticast mode
[ 2133.610292][ T4640] dummy0: entered promiscuous mode
[ 2133.637446][ T4641] br0: port 1(dummy0) entered blocking state
[ 2133.637752][ T4641] br0: port 1(dummy0) entered forwarding state
[ 2136.150830][   T12] dummy0: left allmulticast mode
[ 2136.151669][   T12] dummy0: left promiscuous mode
[ 2136.152161][   T12] br0: port 1(dummy0) entered disabled state