On Thursday 13 March 2003 13:36, Michail Litvak wrote:
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!
ну так написано же что синейм это плохо. :) и в RFC1034 написано Domain names in RRs which point at another name should always point at the primary name and not the alias и бинд восьмой от них дуреет named[98]: ns_forw: query(1.18.5.195.in-addr.arpa) All p ossible A RR's lame named[98]: ns_forw: query(1.18.5.195.in-addr.arpa) NS po ints to CNAME (ns.dc.ukrtel.net:) learnt (CNAME=195.5.6.10:NS=192.93.0.4) -- wbr, slava [vovk-uanic] =================================================================== uanog mailing list. To Unsubscribe: send mail to majordomo@uanog.kiev.ua with "unsubscribe uanog" in the body of the message