[ 1847.676519][ T2304] br0: port 1(dummy0) entered blocking state
[ 1847.676717][ T2304] br0: port 1(dummy0) entered disabled state
[ 1847.676893][ T2304] dummy0: entered allmulticast mode
[ 1847.678309][ T2304] dummy0: entered promiscuous mode
[ 1847.709962][ T2305] br0: port 1(dummy0) entered blocking state
[ 1847.710164][ T2305] br0: port 1(dummy0) entered forwarding state
[ 1849.713045][   T12] dummy0: left allmulticast mode
[ 1849.713204][   T12] dummy0: left promiscuous mode
[ 1849.713424][   T12] br0: port 1(dummy0) entered disabled state