[ 1990.117855][ T4695] br0: port 1(dummy0) entered blocking state
[ 1990.118078][ T4695] br0: port 1(dummy0) entered disabled state
[ 1990.118252][ T4695] dummy0: entered allmulticast mode
[ 1990.119579][ T4695] dummy0: entered promiscuous mode
[ 1990.146204][ T4696] br0: port 1(dummy0) entered blocking state
[ 1990.146536][ T4696] br0: port 1(dummy0) entered forwarding state
[ 1992.187368][   T69] dummy0: left allmulticast mode
[ 1992.187671][   T69] dummy0: left promiscuous mode
[ 1992.187891][   T69] br0: port 1(dummy0) entered disabled state