Meaning of fields in named_dump.db

[blrmaani]

There are so many DNS/BIND gurus on this mailing list. Can anyone
please respond:-)

Cheers
Maani

On Oct 20, 12:11 pm, blrmaani <blrma... at gmail.com> wrote:
> All,
>   I was looking at the named_dump.db file and didn't understand the
> meaning of several fields.
>
> 1. [v4 TTL 7] [v4 success] [v6 unexpected] [v4 not_found] [v6 nxrrset]
> [ttl 1777] [flags 00000000] [srtt 333]
>
> What exactly are these?
>
> I know that the IPs with lower srtts are preferred but I don't know
> what is not_found or unexpected mean?
>
> Also what is the difference b/w lowercase ttl (ttl) and uppercase ttl
> (TTL) in the fields above ?
>
> thanks in advance
> maani