[ 1773.547642] br0: port 1(dummy0) entered blocking state
[ 1773.547716] br0: port 1(dummy0) entered disabled state
[ 1773.547785] dummy0: entered allmulticast mode
[ 1773.547868] dummy0: entered promiscuous mode
[ 1773.551382] br0: port 1(dummy0) entered blocking state
[ 1773.551418] br0: port 1(dummy0) entered forwarding state
[ 1773.817593] dummy0: left allmulticast mode
[ 1773.817656] dummy0: left promiscuous mode
[ 1773.817721] br0: port 1(dummy0) entered disabled state