[ 2016.839517][ T4034] br0: port 1(dummy0) entered blocking state
[ 2016.839708][ T4034] br0: port 1(dummy0) entered disabled state
[ 2016.839869][ T4034] dummy0: entered allmulticast mode
[ 2016.841414][ T4034] dummy0: entered promiscuous mode
[ 2016.866974][ T4035] br0: port 1(dummy0) entered blocking state
[ 2016.867212][ T4035] br0: port 1(dummy0) entered forwarding state
[ 2018.827011][   T69] dummy0: left allmulticast mode
[ 2018.828117][   T69] dummy0: left promiscuous mode
[ 2018.828354][   T69] br0: port 1(dummy0) entered disabled state