[ 1670.998501] br0: port 1(dummy0) entered blocking state
[ 1670.998552] br0: port 1(dummy0) entered disabled state
[ 1670.998592] dummy0: entered allmulticast mode
[ 1670.998658] dummy0: entered promiscuous mode
[ 1671.001265] br0: port 1(dummy0) entered blocking state
[ 1671.001300] br0: port 1(dummy0) entered forwarding state
[ 1671.189830] dummy0: left allmulticast mode
[ 1671.189861] dummy0: left promiscuous mode
[ 1671.189887] br0: port 1(dummy0) entered disabled state