[ 1879.649083][ T2522] br0: port 1(dummy0) entered blocking state
[ 1879.649273][ T2522] br0: port 1(dummy0) entered disabled state
[ 1879.649447][ T2522] dummy0: entered allmulticast mode
[ 1879.650837][ T2522] dummy0: entered promiscuous mode
[ 1879.676054][ T2523] br0: port 1(dummy0) entered blocking state
[ 1879.676427][ T2523] br0: port 1(dummy0) entered forwarding state
[ 1881.618930][   T12] dummy0: left allmulticast mode
[ 1881.619954][   T12] dummy0: left promiscuous mode
[ 1881.620234][   T12] br0: port 1(dummy0) entered disabled state