How to Resolve DNS with "EDNS0" (RFC2671) DNS Servers in Red Hat Enterprise Linux 6.x

Solution Verified - Updated -

Issue

By default, a Red Hat Enterprise Linux system does not communicate with DNS servers configured in accordance with RFC2671 (EDNS0). This causes an inability to resolve DNS against these servers when configured.

Environment

Red Hat Enterprise Linux 6.x server using an EDNS0 DNS server on its network to resolve DNS.

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