[ 1746.312006] br0: port 1(dummy0) entered blocking state
[ 1746.312042] br0: port 1(dummy0) entered disabled state
[ 1746.312079] dummy0: entered allmulticast mode
[ 1746.312132] dummy0: entered promiscuous mode
[ 1746.314987] br0: port 1(dummy0) entered blocking state
[ 1746.315050] br0: port 1(dummy0) entered forwarding state
[ 1746.512158] dummy0: left allmulticast mode
[ 1746.512222] dummy0: left promiscuous mode
[ 1746.512286] br0: port 1(dummy0) entered disabled state