BIND 9.4.2-P1 and sockets?

[Mark Andrews]

> Hello,
> 
> I'm little confused about the new BIND 9.4.2-P1.
> 
> I'm working at an ISP, and the servers are caching servers.
> 
> I'm looking for some informations on the sockets and recursive clients.
> 
> If I'm not wrong , rndc status prints the number of recursive clients.
> (queries which we are really recursing for, not answers from the cache.)
> 
> For example, in my case, I have :
> 
> recursive clients: 387/19900/20000
> 
> Simultaneously, I do "netstat -anp | grep named | grep -v ":53" | wc -l"
> and the result is : 182.
> 
> Since BIND opens up a socket whith a high port to recurse, how can the
> numbers be so different?

	named is quite capable of matching multiple queries and
	only asking one question.

	One query from a client can cause named to ask multiple
	questions simultaniously.

	There is no direct relationship between recursive clients
	and outgoing queries.

> Thank you for your advices.
> 
> Regards,
> 
> 
> Emmanuel
> 
> 
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org