[ 2253.052881][T25302] br0: port 1(dummy0) entered blocking state
[ 2253.053107][T25302] br0: port 1(dummy0) entered disabled state
[ 2253.053313][T25302] dummy0: entered allmulticast mode
[ 2253.054355][T25302] dummy0: entered promiscuous mode
[ 2253.078013][T25303] br0: port 1(dummy0) entered blocking state
[ 2253.078562][T25303] br0: port 1(dummy0) entered forwarding state
[ 2255.282632][   T12] dummy0: left allmulticast mode
[ 2255.283232][   T12] dummy0: left promiscuous mode
[ 2255.283682][   T12] br0: port 1(dummy0) entered disabled state