[ 1614.236347] br0: port 1(dummy0) entered blocking state
[ 1614.236384] br0: port 1(dummy0) entered disabled state
[ 1614.236423] dummy0: entered allmulticast mode
[ 1614.236468] dummy0: entered promiscuous mode
[ 1614.238813] br0: port 1(dummy0) entered blocking state
[ 1614.238867] br0: port 1(dummy0) entered forwarding state
[ 1614.399295] dummy0: left allmulticast mode
[ 1614.399353] dummy0: left promiscuous mode
[ 1614.399379] br0: port 1(dummy0) entered disabled state