[ 1747.718719] br0: port 1(dummy0) entered blocking state
[ 1747.718765] br0: port 1(dummy0) entered disabled state
[ 1747.718801] dummy0: entered allmulticast mode
[ 1747.718854] dummy0: entered promiscuous mode
[ 1747.721536] br0: port 1(dummy0) entered blocking state
[ 1747.721567] br0: port 1(dummy0) entered forwarding state
[ 1747.911845] dummy0: left allmulticast mode
[ 1747.911906] dummy0: left promiscuous mode
[ 1747.911978] br0: port 1(dummy0) entered disabled state