Manually configured network interfaces might not resolve hostnames without domains

This note applies to Red Hat Enterprise Linux 6.

When configuring a network interface manually, including static IP addresses and search domains, it is possible that a search entry will not be propagated to /etc/resolv.conf. Consequently, short host names that do not include the domain name will fail to resolve. To work around this issue, add a search entry manually to /etc/resolv.conf.

This issue is documented in the RHEL 6 Technical Notes, and is represented by Red Hat Bugzilla # 600407.