[ 1661.993781] br0: port 1(dummy0) entered blocking state
[ 1661.993857] br0: port 1(dummy0) entered disabled state
[ 1661.993927] dummy0: entered allmulticast mode
[ 1661.994010] dummy0: entered promiscuous mode
[ 1661.996785] br0: port 1(dummy0) entered blocking state
[ 1661.996848] br0: port 1(dummy0) entered forwarding state
[ 1662.176229] dummy0: left allmulticast mode
[ 1662.176293] dummy0: left promiscuous mode
[ 1662.176356] br0: port 1(dummy0) entered disabled state