[ 1728.492229] br0: port 1(dummy0) entered blocking state
[ 1728.492281] br0: port 1(dummy0) entered disabled state
[ 1728.492322] dummy0: entered allmulticast mode
[ 1728.492377] dummy0: entered promiscuous mode
[ 1728.496211] br0: port 1(dummy0) entered blocking state
[ 1728.496248] br0: port 1(dummy0) entered forwarding state
[ 1728.771171] dummy0: left allmulticast mode
[ 1728.771269] dummy0: left promiscuous mode
[ 1728.771359] br0: port 1(dummy0) entered disabled state