[ 1968.371962][T23443] br0: port 1(dummy0) entered blocking state
[ 1968.372168][T23443] br0: port 1(dummy0) entered disabled state
[ 1968.372334][T23443] dummy0: entered allmulticast mode
[ 1968.373326][T23443] dummy0: entered promiscuous mode
[ 1968.401942][T23444] br0: port 1(dummy0) entered blocking state
[ 1968.402194][T23444] br0: port 1(dummy0) entered forwarding state
[ 1970.293174][   T69] dummy0: left allmulticast mode
[ 1970.293975][   T69] dummy0: left promiscuous mode
[ 1970.294223][   T69] br0: port 1(dummy0) entered disabled state