[ 1846.915368] br0: port 1(dummy0) entered blocking state
[ 1846.915439] br0: port 1(dummy0) entered disabled state
[ 1846.915509] dummy0: entered allmulticast mode
[ 1846.915605] dummy0: entered promiscuous mode
[ 1846.919242] br0: port 1(dummy0) entered blocking state
[ 1846.919281] br0: port 1(dummy0) entered forwarding state
[ 1847.174319] dummy0: left allmulticast mode
[ 1847.174383] dummy0: left promiscuous mode
[ 1847.174472] br0: port 1(dummy0) entered disabled state