Red Hat Bugzilla – Bug 1003669
glibc sends spurious DNS requests for certain hostnames
Last modified: 2016-11-24 11:11:21 EST
"This Bugzilla has been reviewed by Red Hat and is not planned on being
addressed in Red Hat Enterprise Linux 5, and therefore will be closed.
If this bug is critical to production systems, please contact your Red
Hat support representative and provide sufficient business
justification. Issue is already fixed in RHEL-6/7."