[ 2171.052796][T22468] br0: port 1(dummy0) entered blocking state
[ 2171.052978][T22468] br0: port 1(dummy0) entered disabled state
[ 2171.053143][T22468] dummy0: entered allmulticast mode
[ 2171.054351][T22468] dummy0: entered promiscuous mode
[ 2171.079306][T22469] br0: port 1(dummy0) entered blocking state
[ 2171.079482][T22469] br0: port 1(dummy0) entered forwarding state
[ 2172.961437][   T12] dummy0: left allmulticast mode
[ 2172.961616][   T12] dummy0: left promiscuous mode
[ 2172.961837][   T12] br0: port 1(dummy0) entered disabled state