The [domain_realm] section provides a translation from a domain name or
hostname to a Kerberos realm name. The tag name can be a host name, or
a domain name, where domain names are indicated by a prefix of a period
(.). The value of the relation is the Kerberos realm name for
that particular host or domain. Host names and domain names should be
in lower case.
If no translation entry applies, the host's realm is considered to be the hostname's domain portion converted to upper case. For example, the following [domain_realm] section:
[domain_realm]
.mit.edu = ATHENA.MIT.EDU
mit.edu = ATHENA.MIT.EDU
crash.mit.edu = TEST.ATHENA.MIT.EDU
example.com = EXAMPLE.COM
maps crash.mit.edu into the TEST.ATHENA.MIT.EDU
realm. All other hosts in the mit.edu domain will map by
default to the ATHENA.MIT.EDU realm, and all hosts in the
example.com domain will map by default into the
EXAMPLE.COM realm. Note the entries for the hosts
mit.edu and example.com. Without these entries,
these hosts would be mapped into the Kerberos realms EDU and
ORG, respectively.