Hello Slava Vovk! Thu, Mar 13, 2003 at 01:34:43PM +0200, vovk wrote about "[uanog] Re: reverse DNS and CNAME": SV> On Thursday 13 March 2003 13:22, Michail Litvak wrote:
Я торможу ? Или NS на CNAME работать не должно ? (RFC1912) Из-за этого реверсы не работают у ukrtel... SV> SV> а где в этом rfc написано что должно? SV> SV> Don't use CNAMEs in combination with RRs which point to other names SV> like MX, CNAME, PTR and NS.
раздел 2.4 последний абзац: Having NS records pointing to a CNAME is bad and may conflict badly with current BIND servers. In fact, current BIND implementations will ignore such records, possibly leading to a lame delegation. There is a certain amount of security checking done in BIND to prevent spoofing DNS NS records. Also, older BIND servers reportedly will get caught in an infinite query loop trying to figure out the address for the aliased nameserver, causing a continuous stream of DNS requests to be sent. CU! -- //ShaD0w =================================================================== uanog mailing list. To Unsubscribe: send mail to majordomo@uanog.kiev.ua with "unsubscribe uanog" in the body of the message