I quote directly from the BIND homepage (the URL above):
<P>
"If you are running a version of BIND prior to 8.2.2 patchlevel 3, we
recommend you upgrade to the current version for security reasons. If you
are running BIND 8.2.2-P3, and compiled it yourself, we recommend you
upgrade to 8.2.2-P5 to correct a named-xfer problem. <B>If your
vendor-provided BIND is 8.2.2-P3, you should consult their documentation
and confirm that the named-xfer bug has been patched.</B>"<BR>
(emphasis mine)
<P>
As the most recent packages for Red Hat 6.1 (and possibly older releases
too) are 8.2.2-P3, I question if this has been fixed.
<P>
Another quote from http://www.sans.org/topten.htm discussing various
security vulnerabilities in bind:
"As of May 22, 2000, any version earlier than BIND v.8.2.2 patch level 5 is
vulnerable."
<P>
Maybe time for new bind packages for older versions of Red Hat?