[ 1739.781926] br0: port 1(dummy0) entered blocking state
[ 1739.781973] br0: port 1(dummy0) entered disabled state
[ 1739.782003] dummy0: entered allmulticast mode
[ 1739.782057] dummy0: entered promiscuous mode
[ 1739.784436] br0: port 1(dummy0) entered blocking state
[ 1739.784470] br0: port 1(dummy0) entered forwarding state
[ 1739.951170] dummy0: left allmulticast mode
[ 1739.951203] dummy0: left promiscuous mode
[ 1739.951230] br0: port 1(dummy0) entered disabled state