[ 1987.408240][ T8904] br0: port 1(dummy0) entered blocking state
[ 1987.408432][ T8904] br0: port 1(dummy0) entered disabled state
[ 1987.408590][ T8904] dummy0: entered allmulticast mode
[ 1987.410229][ T8904] dummy0: entered promiscuous mode
[ 1987.435229][ T8905] br0: port 1(dummy0) entered blocking state
[ 1987.435468][ T8905] br0: port 1(dummy0) entered forwarding state
[ 1989.295918][   T69] dummy0: left allmulticast mode
[ 1989.297300][   T69] dummy0: left promiscuous mode
[ 1989.297582][   T69] br0: port 1(dummy0) entered disabled state