[ 2340.818321][T30885] br0: port 1(dummy0) entered blocking state
[ 2340.818639][T30885] br0: port 1(dummy0) entered disabled state
[ 2340.818916][T30885] dummy0: entered allmulticast mode
[ 2340.819901][T30885] dummy0: entered promiscuous mode
[ 2340.851934][T30886] br0: port 1(dummy0) entered blocking state
[ 2340.852341][T30886] br0: port 1(dummy0) entered forwarding state
[ 2343.284402][   T12] dummy0: left allmulticast mode
[ 2343.285310][   T12] dummy0: left promiscuous mode
[ 2343.286079][   T12] br0: port 1(dummy0) entered disabled state