[ 1991.472680][T12637] br0: port 1(dummy0) entered blocking state
[ 1991.472927][T12637] br0: port 1(dummy0) entered disabled state
[ 1991.473150][T12637] dummy0: entered allmulticast mode
[ 1991.474104][T12637] dummy0: entered promiscuous mode
[ 1991.499396][T12638] br0: port 1(dummy0) entered blocking state
[ 1991.500128][T12638] br0: port 1(dummy0) entered forwarding state
[ 1993.538034][   T12] dummy0: left allmulticast mode
[ 1993.538569][   T12] dummy0: left promiscuous mode
[ 1993.538790][   T12] br0: port 1(dummy0) entered disabled state