[ 2178.149650][T29214] br0: port 1(dummy0) entered blocking state
[ 2178.149887][T29214] br0: port 1(dummy0) entered disabled state
[ 2178.150101][T29214] dummy0: entered allmulticast mode
[ 2178.151056][T29214] dummy0: entered promiscuous mode
[ 2178.176114][T29215] br0: port 1(dummy0) entered blocking state
[ 2178.176294][T29215] br0: port 1(dummy0) entered forwarding state
[ 2180.523132][   T12] dummy0: left allmulticast mode
[ 2180.524204][   T12] dummy0: left promiscuous mode
[ 2180.524449][   T12] br0: port 1(dummy0) entered disabled state