[ 1931.960879][ T1705] br0: port 1(dummy0) entered blocking state
[ 1931.961074][ T1705] br0: port 1(dummy0) entered disabled state
[ 1931.961237][ T1705] dummy0: entered allmulticast mode
[ 1931.962493][ T1705] dummy0: entered promiscuous mode
[ 1931.996665][ T1706] br0: port 1(dummy0) entered blocking state
[ 1931.996910][ T1706] br0: port 1(dummy0) entered forwarding state
[ 1933.873534][   T12] dummy0: left allmulticast mode
[ 1933.874531][   T12] dummy0: left promiscuous mode
[ 1933.874753][   T12] br0: port 1(dummy0) entered disabled state