[ 2225.627495][ T8657] br0: port 1(dummy0) entered blocking state
[ 2225.627795][ T8657] br0: port 1(dummy0) entered disabled state
[ 2225.628080][ T8657] dummy0: entered allmulticast mode
[ 2225.629094][ T8657] dummy0: entered promiscuous mode
[ 2225.662436][ T8658] br0: port 1(dummy0) entered blocking state
[ 2225.663105][ T8658] br0: port 1(dummy0) entered forwarding state
[ 2228.251600][   T64] dummy0: left allmulticast mode
[ 2228.252494][   T64] dummy0: left promiscuous mode
[ 2228.253159][   T64] br0: port 1(dummy0) entered disabled state