[ 1731.124078] br0: port 1(dummy0) entered blocking state
[ 1731.124129] br0: port 1(dummy0) entered disabled state
[ 1731.124158] dummy0: entered allmulticast mode
[ 1731.124205] dummy0: entered promiscuous mode
[ 1731.127379] br0: port 1(dummy0) entered blocking state
[ 1731.127422] br0: port 1(dummy0) entered forwarding state
[ 1731.328190] dummy0: left allmulticast mode
[ 1731.328256] dummy0: left promiscuous mode
[ 1731.328327] br0: port 1(dummy0) entered disabled state