[ 1884.748456][ T3231] br0: port 1(dummy0) entered blocking state
[ 1884.748664][ T3231] br0: port 1(dummy0) entered disabled state
[ 1884.748843][ T3231] dummy0: entered allmulticast mode
[ 1884.749839][ T3231] dummy0: entered promiscuous mode
[ 1884.770215][ T3232] br0: port 1(dummy0) entered blocking state
[ 1884.770532][ T3232] br0: port 1(dummy0) entered forwarding state
[ 1886.622841][   T12] dummy0: left allmulticast mode
[ 1886.623180][   T12] dummy0: left promiscuous mode
[ 1886.623451][   T12] br0: port 1(dummy0) entered disabled state