[ 1906.577314] br0: port 1(dummy0) entered blocking state
[ 1906.577353] br0: port 1(dummy0) entered disabled state
[ 1906.577392] dummy0: entered allmulticast mode
[ 1906.577440] dummy0: entered promiscuous mode
[ 1906.580555] br0: port 1(dummy0) entered blocking state
[ 1906.580585] br0: port 1(dummy0) entered forwarding state
[ 1906.812142] dummy0: left allmulticast mode
[ 1906.812176] dummy0: left promiscuous mode
[ 1906.812209] br0: port 1(dummy0) entered disabled state