[ 1569.585705] br0: port 1(dummy0) entered blocking state
[ 1569.585751] br0: port 1(dummy0) entered disabled state
[ 1569.585788] dummy0: entered allmulticast mode
[ 1569.585845] dummy0: entered promiscuous mode
[ 1569.588372] br0: port 1(dummy0) entered blocking state
[ 1569.588408] br0: port 1(dummy0) entered forwarding state
[ 1569.766950] dummy0: left allmulticast mode
[ 1569.766988] dummy0: left promiscuous mode
[ 1569.767023] br0: port 1(dummy0) entered disabled state