Katello/katello-installer — pull request #62 by lzap (2013-10-30 11:22:02+00:00)
Title: RHBZ#78828 - reverse DNS check added

Extending our hostname checker to also check in reverse DNS entries for the
IP bound to the hostname. If the result does not match, error is printed.
Users are still able to skip the check by setting a special environment
variable, just in case the checker does not work well on various network
environments (multiple IP addresses, IPv6 etc).