[ 1714.188260] br0: port 1(dummy0) entered blocking state
[ 1714.188342] br0: port 1(dummy0) entered disabled state
[ 1714.188418] dummy0: entered allmulticast mode
[ 1714.188510] dummy0: entered promiscuous mode
[ 1714.191922] br0: port 1(dummy0) entered blocking state
[ 1714.191956] br0: port 1(dummy0) entered forwarding state
[ 1714.432196] dummy0: left allmulticast mode
[ 1714.432230] dummy0: left promiscuous mode
[ 1714.432264] br0: port 1(dummy0) entered disabled state