[ 1688.054250] br0: port 1(dummy0) entered blocking state
[ 1688.054297] br0: port 1(dummy0) entered disabled state
[ 1688.054329] dummy0: entered allmulticast mode
[ 1688.054387] dummy0: entered promiscuous mode
[ 1688.056998] br0: port 1(dummy0) entered blocking state
[ 1688.057061] br0: port 1(dummy0) entered forwarding state
[ 1688.255733] dummy0: left allmulticast mode
[ 1688.255795] dummy0: left promiscuous mode
[ 1688.255856] br0: port 1(dummy0) entered disabled state