[ 2331.477013][T18919] br0: port 1(dummy0) entered blocking state
[ 2331.477373][T18919] br0: port 1(dummy0) entered disabled state
[ 2331.477703][T18919] dummy0: entered allmulticast mode
[ 2331.478946][T18919] dummy0: entered promiscuous mode
[ 2331.506439][T18920] br0: port 1(dummy0) entered blocking state
[ 2331.506867][T18920] br0: port 1(dummy0) entered forwarding state
[ 2334.035657][   T12] dummy0: left allmulticast mode
[ 2334.036744][   T12] dummy0: left promiscuous mode
[ 2334.037094][   T12] br0: port 1(dummy0) entered disabled state