[ 1912.772566][ T3935] br0: port 1(dummy0) entered blocking state
[ 1912.772799][ T3935] br0: port 1(dummy0) entered disabled state
[ 1912.773021][ T3935] dummy0: entered allmulticast mode
[ 1912.774068][ T3935] dummy0: entered promiscuous mode
[ 1912.803167][ T3936] br0: port 1(dummy0) entered blocking state
[ 1912.803406][ T3936] br0: port 1(dummy0) entered forwarding state
[ 1914.765415][   T12] dummy0: left allmulticast mode
[ 1914.766382][   T12] dummy0: left promiscuous mode
[ 1914.766622][   T12] br0: port 1(dummy0) entered disabled state