[ 1667.152084] br0: port 1(dummy0) entered blocking state
[ 1667.152166] br0: port 1(dummy0) entered disabled state
[ 1667.152235] dummy0: entered allmulticast mode
[ 1667.152320] dummy0: entered promiscuous mode
[ 1667.155717] br0: port 1(dummy0) entered blocking state
[ 1667.155749] br0: port 1(dummy0) entered forwarding state
[ 1667.391473] dummy0: left allmulticast mode
[ 1667.391510] dummy0: left promiscuous mode
[ 1667.391599] br0: port 1(dummy0) entered disabled state