[ 1871.948149] br0: port 1(dummy0) entered blocking state
[ 1871.948229] br0: port 1(dummy0) entered disabled state
[ 1871.948296] dummy0: entered allmulticast mode
[ 1871.948382] dummy0: entered promiscuous mode
[ 1871.952119] br0: port 1(dummy0) entered blocking state
[ 1871.952153] br0: port 1(dummy0) entered forwarding state
[ 1872.203153] dummy0: left allmulticast mode
[ 1872.203190] dummy0: left promiscuous mode
[ 1872.203224] br0: port 1(dummy0) entered disabled state