glub or authauthority NS is cached and used at a cache dns server?
Felix New
moxnet at gmail.com
Wed Mar 21 07:07:34 UTC 2012
Dear all,
we can get a domain's NS record from two address: registry's top level dns;
the domain's authority dns.
for example the domain hgbbs.com, and its dns is f1g1ns1.dnspod.net./
f1g1ns2.dnspod.net.
we can get hgbbs.com's glue ns records from a.gtld-servers.net:
hgbbs.com. 172800 NS f1g1ns1.dnspod.net.
172800 NS f1g1ns2.dnspod.net.
also we can get its authority ns records from f1g1ns1.dnspod.net or
f1g1ns2.dnspod.net:
hgbbs.com. 600 IN NS f1g1ns1.dnspod.net.
600 IN NS f1g1ns2.dnspod.net.
when i dumpdb from the cache dns, some domain's ns records are glue DNS,
and others are authauthority.
The TTL are different. which type is used in Cache DNS?
--
Best regards.
Felix New
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