[ 2187.309234][ T8273] br0: port 1(dummy0) entered blocking state
[ 2187.309437][ T8273] br0: port 1(dummy0) entered disabled state
[ 2187.309598][ T8273] dummy0: entered allmulticast mode
[ 2187.310503][ T8273] dummy0: entered promiscuous mode
[ 2187.348109][ T8274] br0: port 1(dummy0) entered blocking state
[ 2187.348303][ T8274] br0: port 1(dummy0) entered forwarding state
[ 2189.655834][   T68] dummy0: left allmulticast mode
[ 2189.656973][   T68] dummy0: left promiscuous mode
[ 2189.657721][   T68] br0: port 1(dummy0) entered disabled state