glub or authauthority NS is cached and used at a cache dns server?
liumingxing at cnnic.cn
Wed Mar 21 08:32:14 UTC 2012
I have read your blog and do not agree with you about one of your conclusions to non-existence of ns rrs of www.qq.com in the ns-tel1.qq.com server. One recursor must request ns rr(s) of www.qq.com to the ns[1-4].qq.com server before requesting to ns-tel[1-2].qq.com. When it receives the ns rrs and glue rrs of www.qq.com from ns[1-4].qq.com, it may at last ask ns-tel[1-2].qq.com what your ns rr(s) is(are). If non-existence, the recursor will continue to ask other disired type of rrs of www.qq.com to the ns-tel[1-2].qq.com, otherwise will send requests to the informed servers. No other bad things are seen.
From: Jeff Peng
Date: 2012-03-21 15:30
Subject: Re: glub or authauthority NS is cached and used at a cache dns server?
You might want to read my this blog；
于 2012-3-21 15:07, Felix New 写道:
> 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?
Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list
bind-users mailing list
bind-users at lists.isc.org
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the bind-users