[ 2393.869793][ T6137] br0: port 1(dummy0) entered blocking state
[ 2393.870104][ T6137] br0: port 1(dummy0) entered disabled state
[ 2393.870392][ T6137] dummy0: entered allmulticast mode
[ 2393.871522][ T6137] dummy0: entered promiscuous mode
[ 2393.899434][ T6138] br0: port 1(dummy0) entered blocking state
[ 2393.899884][ T6138] br0: port 1(dummy0) entered forwarding state
[ 2396.451341][   T12] dummy0: left allmulticast mode
[ 2396.452082][   T12] dummy0: left promiscuous mode
[ 2396.452628][   T12] br0: port 1(dummy0) entered disabled state