[ 1893.975943] br0: port 1(dummy0) entered blocking state
[ 1893.975981] br0: port 1(dummy0) entered disabled state
[ 1893.976015] dummy0: entered allmulticast mode
[ 1893.976064] dummy0: entered promiscuous mode
[ 1893.979517] br0: port 1(dummy0) entered blocking state
[ 1893.979550] br0: port 1(dummy0) entered forwarding state
[ 1894.240179] dummy0: left allmulticast mode
[ 1894.240209] dummy0: left promiscuous mode
[ 1894.240242] br0: port 1(dummy0) entered disabled state