[ 1775.308716] br0: port 1(dummy0) entered blocking state
[ 1775.308762] br0: port 1(dummy0) entered disabled state
[ 1775.308800] dummy0: entered allmulticast mode
[ 1775.308860] dummy0: entered promiscuous mode
[ 1775.312593] br0: port 1(dummy0) entered blocking state
[ 1775.312660] br0: port 1(dummy0) entered forwarding state
[ 1775.588169] dummy0: left allmulticast mode
[ 1775.588229] dummy0: left promiscuous mode
[ 1775.588293] br0: port 1(dummy0) entered disabled state