[ 2183.869363][ T7546] br0: port 1(dummy0) entered blocking state
[ 2183.869570][ T7546] br0: port 1(dummy0) entered disabled state
[ 2183.869742][ T7546] dummy0: entered allmulticast mode
[ 2183.870720][ T7546] dummy0: entered promiscuous mode
[ 2183.895832][ T7547] br0: port 1(dummy0) entered blocking state
[ 2183.896115][ T7547] br0: port 1(dummy0) entered forwarding state
[ 2186.339427][   T12] dummy0: left allmulticast mode
[ 2186.340176][   T12] dummy0: left promiscuous mode
[ 2186.340570][   T12] br0: port 1(dummy0) entered disabled state