[ 2213.937434][ T9741] br0: port 1(dummy0) entered blocking state
[ 2213.937743][ T9741] br0: port 1(dummy0) entered disabled state
[ 2213.938010][ T9741] dummy0: entered allmulticast mode
[ 2213.939016][ T9741] dummy0: entered promiscuous mode
[ 2213.969957][ T9742] br0: port 1(dummy0) entered blocking state
[ 2213.970301][ T9742] br0: port 1(dummy0) entered forwarding state
[ 2216.447349][   T12] dummy0: left allmulticast mode
[ 2216.447648][   T12] dummy0: left promiscuous mode
[ 2216.447977][   T12] br0: port 1(dummy0) entered disabled state