[ 2192.003637][T21570] br0: port 1(dummy0) entered blocking state
[ 2192.003832][T21570] br0: port 1(dummy0) entered disabled state
[ 2192.004002][T21570] dummy0: entered allmulticast mode
[ 2192.004974][T21570] dummy0: entered promiscuous mode
[ 2192.032351][T21571] br0: port 1(dummy0) entered blocking state
[ 2192.032652][T21571] br0: port 1(dummy0) entered forwarding state
[ 2193.968750][   T68] dummy0: left allmulticast mode
[ 2193.969736][   T68] dummy0: left promiscuous mode
[ 2193.969973][   T68] br0: port 1(dummy0) entered disabled state