[ 1985.477013][ T5792] br0: port 1(dummy0) entered blocking state
[ 1985.477216][ T5792] br0: port 1(dummy0) entered disabled state
[ 1985.477397][ T5792] dummy0: entered allmulticast mode
[ 1985.478435][ T5792] dummy0: entered promiscuous mode
[ 1985.504112][ T5793] br0: port 1(dummy0) entered blocking state
[ 1985.504363][ T5793] br0: port 1(dummy0) entered forwarding state
[ 1987.489607][   T12] dummy0: left allmulticast mode
[ 1987.489943][   T12] dummy0: left promiscuous mode
[ 1987.490211][   T12] br0: port 1(dummy0) entered disabled state