[ 1842.649297] br0: port 1(dummy0) entered blocking state
[ 1842.649334] br0: port 1(dummy0) entered disabled state
[ 1842.649369] dummy0: entered allmulticast mode
[ 1842.649423] dummy0: entered promiscuous mode
[ 1842.652996] br0: port 1(dummy0) entered blocking state
[ 1842.653035] br0: port 1(dummy0) entered forwarding state
[ 1842.904535] dummy0: left allmulticast mode
[ 1842.904569] dummy0: left promiscuous mode
[ 1842.904596] br0: port 1(dummy0) entered disabled state