[ 2066.045971][ T3341] br0: port 1(dummy0) entered blocking state
[ 2066.046171][ T3341] br0: port 1(dummy0) entered disabled state
[ 2066.046333][ T3341] dummy0: entered allmulticast mode
[ 2066.047299][ T3341] dummy0: entered promiscuous mode
[ 2066.077615][ T3342] br0: port 1(dummy0) entered blocking state
[ 2066.077870][ T3342] br0: port 1(dummy0) entered forwarding state
[ 2068.131920][   T12] dummy0: left allmulticast mode
[ 2068.132539][   T12] dummy0: left promiscuous mode
[ 2068.132800][   T12] br0: port 1(dummy0) entered disabled state