which NS record will be cached?
Peter Andreev
andreev.peter at gmail.com
Thu Jan 12 10:22:18 UTC 2012
2012/1/12 MontyRee <chulmin2 at hotmail.com>
>
> Hi, all.
>
>
> I have one question about NS cache ttl.
> for example, I can get two different NS TTL like below.
>
> $ dig google.com ns +trace
>
> google.com. 172800 IN NS ns2.google.com.
> google.com. 172800 IN NS ns1.google.com.
> google.com. 172800 IN NS ns3.google.com.
> google.com. 172800 IN NS ns4.google.com.
> ;; Received 164 bytes from 192.5.6.30#53(a.gtld-servers.net) in 173 ms
>
> google.com. 345600 IN NS ns4.google.com.
> google.com. 345600 IN NS ns1.google.com.
> google.com. 345600 IN NS ns2.google.com.
> google.com. 345600 IN NS ns3.google.com.
> ;; Received 164 bytes from 216.239.34.10#53(ns2.google.com) in 43 ms
>
> so, on resolving DNS, which NS record TTL will be cached generally?
> 172800 or 345600?
>
>
> Thanks in advance.
>
345600
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