[ 2201.162942][T18255] br0: port 1(dummy0) entered blocking state
[ 2201.163177][T18255] br0: port 1(dummy0) entered disabled state
[ 2201.163398][T18255] dummy0: entered allmulticast mode
[ 2201.164604][T18255] dummy0: entered promiscuous mode
[ 2201.189771][T18256] br0: port 1(dummy0) entered blocking state
[ 2201.190051][T18256] br0: port 1(dummy0) entered forwarding state
[ 2203.087861][   T12] dummy0: left allmulticast mode
[ 2203.088911][   T12] dummy0: left promiscuous mode
[ 2203.089206][   T12] br0: port 1(dummy0) entered disabled state