[ 1873.908500] br0: port 1(dummy0) entered blocking state
[ 1873.908538] br0: port 1(dummy0) entered disabled state
[ 1873.908576] dummy0: entered allmulticast mode
[ 1873.908630] dummy0: entered promiscuous mode
[ 1873.912115] br0: port 1(dummy0) entered blocking state
[ 1873.912148] br0: port 1(dummy0) entered forwarding state
[ 1874.174693] dummy0: left allmulticast mode
[ 1874.174728] dummy0: left promiscuous mode
[ 1874.174758] br0: port 1(dummy0) entered disabled state