[ 2172.772858][T25403] br0: port 1(dummy0) entered blocking state
[ 2172.773052][T25403] br0: port 1(dummy0) entered disabled state
[ 2172.773216][T25403] dummy0: entered allmulticast mode
[ 2172.774747][T25403] dummy0: entered promiscuous mode
[ 2172.797526][T25404] br0: port 1(dummy0) entered blocking state
[ 2172.798207][T25404] br0: port 1(dummy0) entered forwarding state
[ 2174.814516][   T12] dummy0: left allmulticast mode
[ 2174.815256][   T12] dummy0: left promiscuous mode
[ 2174.815495][   T12] br0: port 1(dummy0) entered disabled state