[ 1961.558966][ T5535] br0: port 1(dummy0) entered blocking state
[ 1961.559176][ T5535] br0: port 1(dummy0) entered disabled state
[ 1961.559345][ T5535] dummy0: entered allmulticast mode
[ 1961.560258][ T5535] dummy0: entered promiscuous mode
[ 1961.588792][ T5536] br0: port 1(dummy0) entered blocking state
[ 1961.589022][ T5536] br0: port 1(dummy0) entered forwarding state
[ 1963.516351][   T12] dummy0: left allmulticast mode
[ 1963.516535][   T12] dummy0: left promiscuous mode
[ 1963.516774][   T12] br0: port 1(dummy0) entered disabled state