[ 2014.516846][T18346] br0: port 1(dummy0) entered blocking state
[ 2014.517020][T18346] br0: port 1(dummy0) entered disabled state
[ 2014.517165][T18346] dummy0: entered allmulticast mode
[ 2014.518020][T18346] dummy0: entered promiscuous mode
[ 2014.554662][T18347] br0: port 1(dummy0) entered blocking state
[ 2014.555374][T18347] br0: port 1(dummy0) entered forwarding state
[ 2016.504439][   T68] dummy0: left allmulticast mode
[ 2016.505254][   T68] dummy0: left promiscuous mode
[ 2016.505534][   T68] br0: port 1(dummy0) entered disabled state