[ 1747.324303] br0: port 1(dummy0) entered blocking state
[ 1747.324356] br0: port 1(dummy0) entered disabled state
[ 1747.324385] dummy0: entered allmulticast mode
[ 1747.324444] dummy0: entered promiscuous mode
[ 1747.326919] br0: port 1(dummy0) entered blocking state
[ 1747.326988] br0: port 1(dummy0) entered forwarding state
[ 1747.517030] dummy0: left allmulticast mode
[ 1747.517111] dummy0: left promiscuous mode
[ 1747.517149] br0: port 1(dummy0) entered disabled state