[ 1657.594534] br0: port 1(dummy0) entered blocking state
[ 1657.594564] br0: port 1(dummy0) entered disabled state
[ 1657.594592] dummy0: entered allmulticast mode
[ 1657.594627] dummy0: entered promiscuous mode
[ 1657.597296] br0: port 1(dummy0) entered blocking state
[ 1657.597319] br0: port 1(dummy0) entered forwarding state
[ 1657.790001] dummy0: left allmulticast mode
[ 1657.790067] dummy0: left promiscuous mode
[ 1657.790120] br0: port 1(dummy0) entered disabled state