[ 1728.032756] br0: port 1(dummy0) entered blocking state
[ 1728.032799] br0: port 1(dummy0) entered disabled state
[ 1728.032838] dummy0: entered allmulticast mode
[ 1728.032886] dummy0: entered promiscuous mode
[ 1728.035706] br0: port 1(dummy0) entered blocking state
[ 1728.035769] br0: port 1(dummy0) entered forwarding state
[ 1728.228045] dummy0: left allmulticast mode
[ 1728.228082] dummy0: left promiscuous mode
[ 1728.228111] br0: port 1(dummy0) entered disabled state