[ 1913.694241][T22427] br0: port 1(dummy0) entered blocking state
[ 1913.694432][T22427] br0: port 1(dummy0) entered disabled state
[ 1913.694594][T22427] dummy0: entered allmulticast mode
[ 1913.695474][T22427] dummy0: entered promiscuous mode
[ 1913.724128][T22428] br0: port 1(dummy0) entered blocking state
[ 1913.724826][T22428] br0: port 1(dummy0) entered forwarding state
[ 1915.770137][   T12] dummy0: left allmulticast mode
[ 1915.771087][   T12] dummy0: left promiscuous mode
[ 1915.771331][   T12] br0: port 1(dummy0) entered disabled state