127.0.0.1 or ::1
lots of discussion with many, but ok krw

one created during an install by making the name it contains a FQDN.
Make the /etc/hosts file installed from etcXX.tgz internally consistant
by including a valid entry for the name in /etc/myname.
These two files will 'survive' the install process only if the user
chooses to *not* configure the network. In that scenario these changes
silence the sendmail complaints about 'My unqualified host name ...'.
ok deraadt@.

scripts use - '1.2.3.4 host.my.domain host'.
ok millert@

defined order, so we should return ::1 first.