[ 2198.045821][T16756] br0: port 1(dummy0) entered blocking state
[ 2198.046014][T16756] br0: port 1(dummy0) entered disabled state
[ 2198.046184][T16756] dummy0: entered allmulticast mode
[ 2198.047060][T16756] dummy0: entered promiscuous mode
[ 2198.076093][T16757] br0: port 1(dummy0) entered blocking state
[ 2198.076529][T16757] br0: port 1(dummy0) entered forwarding state
[ 2200.324189][   T12] dummy0: left allmulticast mode
[ 2200.325117][   T12] dummy0: left promiscuous mode
[ 2200.325361][   T12] br0: port 1(dummy0) entered disabled state