[ 1855.185688] br0: port 1(dummy0) entered blocking state
[ 1855.185740] br0: port 1(dummy0) entered disabled state
[ 1855.185774] dummy0: entered allmulticast mode
[ 1855.185825] dummy0: entered promiscuous mode
[ 1855.189431] br0: port 1(dummy0) entered blocking state
[ 1855.189493] br0: port 1(dummy0) entered forwarding state
[ 1855.464965] dummy0: left allmulticast mode
[ 1855.464998] dummy0: left promiscuous mode
[ 1855.465029] br0: port 1(dummy0) entered disabled state