[ 1836.487845][ T2915] br0: port 1(dummy0) entered blocking state
[ 1836.488090][ T2915] br0: port 1(dummy0) entered disabled state
[ 1836.488731][ T2915] dummy0: entered allmulticast mode
[ 1836.489765][ T2915] dummy0: entered promiscuous mode
[ 1836.516442][ T2916] br0: port 1(dummy0) entered blocking state
[ 1836.516698][ T2916] br0: port 1(dummy0) entered forwarding state
[ 1838.378710][   T71] dummy0: left allmulticast mode
[ 1838.378983][   T71] dummy0: left promiscuous mode
[ 1838.379220][   T71] br0: port 1(dummy0) entered disabled state