[ 1983.037004][T22703] br0: port 1(dummy0) entered blocking state
[ 1983.037243][T22703] br0: port 1(dummy0) entered disabled state
[ 1983.037459][T22703] dummy0: entered allmulticast mode
[ 1983.039530][T22703] dummy0: entered promiscuous mode
[ 1983.069776][T22704] br0: port 1(dummy0) entered blocking state
[ 1983.070239][T22704] br0: port 1(dummy0) entered forwarding state
[ 1984.980700][   T70] dummy0: left allmulticast mode
[ 1984.981725][   T70] dummy0: left promiscuous mode
[ 1984.981967][   T70] br0: port 1(dummy0) entered disabled state