name resolving: local hostname vs. local IP (NAME-4406)

[lpirl]

Judging from

lynis/include/tests_nameservices

Line 618 in b53d6a8

DATA=$(${EGREPBINARY} -v '^(#|$)' ${ROOTDIR}etc/hosts | ${EGREPBINARY} '^(localhost|::1)\s' | ${GREPBINARY} -w ${HOSTNAME})

, lines which contain the host name and which start with locahost or ::1 triggers control NAME-4406.

I fail to understand why the test checks for lines starting with locahost or ::1 instead of lines starting with 127.0.0.1 or ::1. Additionally, man hostname(1) states:

THE FQDN

…

The  recommended  method of setting the FQDN is to make the hostname be
an alias for the fully qualified name using /etc/hosts, DNS, or NIS.
For example, if the hostname was "ursula", one might have a line in
/etc/hosts which reads

      127.0.1.1    ursula.example.com ursula

Technically: The FQDN is the name getaddrinfo(3) returns for the host
name returned by gethostname(2).  The DNS domain name is the part after
the first dot.

Therefore it depends on the configuration of the resolver (usually in
/etc/host.conf) how you can change it. Usually the hosts file is parsed
before DNS or NIS, so it is most common to change the FQDN in
/etc/hosts.

So isn't there a discrepancy in recommendations?

Thank you. :)