dhcpcd: For anonymous do not bring interface up if was down
dhcpcd: For anonymous do not bring interface up if was down

We need to bring the interface down on carrier loss to change the
hardware address, but we should only bring it up again if it was
up previously.

After all it's really an administrative flag.

rsmarples/dhcpcd,rsmarples/dhcpcd,rsmarples/dhcpcd