[ 1819.453240] br0: port 1(dummy0) entered blocking state
[ 1819.453286] br0: port 1(dummy0) entered disabled state
[ 1819.453320] dummy0: entered allmulticast mode
[ 1819.453368] dummy0: entered promiscuous mode
[ 1819.456239] br0: port 1(dummy0) entered blocking state
[ 1819.456302] br0: port 1(dummy0) entered forwarding state
[ 1819.658961] dummy0: left allmulticast mode
[ 1819.659053] dummy0: left promiscuous mode
[ 1819.659118] br0: port 1(dummy0) entered disabled state