[ 1666.338205] br0: port 1(dummy0) entered blocking state
[ 1666.338242] br0: port 1(dummy0) entered disabled state
[ 1666.338284] dummy0: entered allmulticast mode
[ 1666.338336] dummy0: entered promiscuous mode
[ 1666.341051] br0: port 1(dummy0) entered blocking state
[ 1666.341084] br0: port 1(dummy0) entered forwarding state
[ 1666.519339] dummy0: left allmulticast mode
[ 1666.519413] dummy0: left promiscuous mode
[ 1666.519504] br0: port 1(dummy0) entered disabled state