[ 1986.906500][T23889] br0: port 1(dummy0) entered blocking state
[ 1986.906734][T23889] br0: port 1(dummy0) entered disabled state
[ 1986.906952][T23889] dummy0: entered allmulticast mode
[ 1986.908563][T23889] dummy0: entered promiscuous mode
[ 1986.932322][T23890] br0: port 1(dummy0) entered blocking state
[ 1986.932980][T23890] br0: port 1(dummy0) entered forwarding state
[ 1988.871866][   T12] dummy0: left allmulticast mode
[ 1988.872777][   T12] dummy0: left promiscuous mode
[ 1988.873019][   T12] br0: port 1(dummy0) entered disabled state