[ 2171.118330][T21458] br0: port 1(dummy0) entered blocking state
[ 2171.118701][T21458] br0: port 1(dummy0) entered disabled state
[ 2171.119039][T21458] dummy0: entered allmulticast mode
[ 2171.120272][T21458] dummy0: entered promiscuous mode
[ 2171.154137][T21459] br0: port 1(dummy0) entered blocking state
[ 2171.154967][T21459] br0: port 1(dummy0) entered forwarding state
[ 2173.736380][   T12] dummy0: left allmulticast mode
[ 2173.737333][   T12] dummy0: left promiscuous mode
[ 2173.737944][   T12] br0: port 1(dummy0) entered disabled state