[ 1811.656953] br0: port 1(dummy0) entered blocking state
[ 1811.656987] br0: port 1(dummy0) entered disabled state
[ 1811.657024] dummy0: entered allmulticast mode
[ 1811.657084] dummy0: entered promiscuous mode
[ 1811.659826] br0: port 1(dummy0) entered blocking state
[ 1811.659889] br0: port 1(dummy0) entered forwarding state
[ 1811.852432] dummy0: left allmulticast mode
[ 1811.852468] dummy0: left promiscuous mode
[ 1811.852520] br0: port 1(dummy0) entered disabled state