Cleanup: Remove unused "ipv6_local_address".

This was originally used on the "clat" interface. That interface is not created
anymore (since the switch to using a raw socket). Note that the v6 address used
on the raw socket is a combination of the plat subnet plus a host ID, and not
this link-local address.

Also fixup default values to match clatd.conf values.

(cherry picked from commit c0a8ce0d1ddcd3196c213e6df595955835a6942e)

Change-Id: I3470a02e6798b65cae0f8d7f074ce51fb0647e6a
3 files changed