[ 1673.964504] br0: port 1(dummy0) entered blocking state
[ 1673.964584] br0: port 1(dummy0) entered disabled state
[ 1673.964651] dummy0: entered allmulticast mode
[ 1673.964743] dummy0: entered promiscuous mode
[ 1673.967513] br0: port 1(dummy0) entered blocking state
[ 1673.967577] br0: port 1(dummy0) entered forwarding state
[ 1674.159045] dummy0: left allmulticast mode
[ 1674.159087] dummy0: left promiscuous mode
[ 1674.159143] br0: port 1(dummy0) entered disabled state