[ 2270.185267][T30340] br0: port 1(dummy0) entered blocking state
[ 2270.185515][T30340] br0: port 1(dummy0) entered disabled state
[ 2270.185738][T30340] dummy0: entered allmulticast mode
[ 2270.186719][T30340] dummy0: entered promiscuous mode
[ 2270.209170][T30341] br0: port 1(dummy0) entered blocking state
[ 2270.209390][T30341] br0: port 1(dummy0) entered forwarding state
[ 2272.221180][   T12] dummy0: left allmulticast mode
[ 2272.221351][   T12] dummy0: left promiscuous mode
[ 2272.221565][   T12] br0: port 1(dummy0) entered disabled state