[ 2307.201176][  T442] br0: port 1(dummy0) entered blocking state
[ 2307.201484][  T442] br0: port 1(dummy0) entered disabled state
[ 2307.201769][  T442] dummy0: entered allmulticast mode
[ 2307.203439][  T442] dummy0: entered promiscuous mode
[ 2307.229723][  T443] br0: port 1(dummy0) entered blocking state
[ 2307.230025][  T443] br0: port 1(dummy0) entered forwarding state
[ 2309.591522][   T70] dummy0: left allmulticast mode
[ 2309.591842][   T70] dummy0: left promiscuous mode
[ 2309.592450][   T70] br0: port 1(dummy0) entered disabled state