[ 1878.856428] br0: port 1(dummy0) entered blocking state
[ 1878.856461] br0: port 1(dummy0) entered disabled state
[ 1878.856542] dummy0: entered allmulticast mode
[ 1878.856617] dummy0: entered promiscuous mode
[ 1878.859846] br0: port 1(dummy0) entered blocking state
[ 1878.859877] br0: port 1(dummy0) entered forwarding state
[ 1879.105188] dummy0: left allmulticast mode
[ 1879.105210] dummy0: left promiscuous mode
[ 1879.105228] br0: port 1(dummy0) entered disabled state