How to configure another loopback device?

[Hiroki Sato]

John Dison <jdison16 at yahoo.com> wrote
  in <788296467.1718144.1482676705910 at mail.yahoo.com>:

jd> Also one more thing which looks strange: if I use
jd> ifconfig_lo1_ipv6="inet6 auto_linklocal", then ipv6 aliases on lo1 are
jd> configured correctly, but there is no link-local address.  If I
jd> exclude this line from rc.conf, then no ipv6 aliases are configured at
jd> all (only ipv4).

 auto_linklocal does not work on the second loopback interface because
 multiple loopback interface support for IPv6 is incomplete at this
 moment.  You need to add fe80::1%lo1 (or similar) manually if you
 want an LLA.

 The ifconfig_IF_ipv6 line determines whether the interface uses IPv6
 or not.  So if you drop it, all of inet6 configuration such as
 ifconfig_IF_aliasN="inet6..." will be ignored.

-- Hiroki
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