[ 2393.358584][ T2471] br0: port 1(dummy0) entered blocking state
[ 2393.358884][ T2471] br0: port 1(dummy0) entered disabled state
[ 2393.359161][ T2471] dummy0: entered allmulticast mode
[ 2393.360156][ T2471] dummy0: entered promiscuous mode
[ 2393.395683][ T2472] br0: port 1(dummy0) entered blocking state
[ 2393.396460][ T2472] br0: port 1(dummy0) entered forwarding state
[ 2395.813846][   T12] dummy0: left allmulticast mode
[ 2395.814855][   T12] dummy0: left promiscuous mode
[ 2395.815200][   T12] br0: port 1(dummy0) entered disabled state