> However, in BIND 9.2.4rc6, the slave server does not do that when it is
> restarted, when the NS is defined by CNAME records.


Again you are confused. No version of named checks to see if a
NS record refers to a CNAME or not before initiating a refresh
cycle.
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews@isc.org