Subject: Re: BIND9 very slow resolving external addresses
To: Amadeus Stevenson <amadeus.stevenson@gmail.com>
From: Mipam <mipam@ibb.net>
List: netbsd-users
Date: 12/10/2004 15:46:08
On Thu, 9 Dec 2004, Amadeus Stevenson wrote:
> Hello,
>
> I recently set up a simple ipnat/ipf firewall on a lan with a local
> caching DNS server, bind9 from pkg_add.
>
> It takes about a second or two to resolve external addresses, which is
> slowing things down a lot. Once cached it is much faster. Do you have
> any ideas what I am doing wrong? This happens from the gateway itself
> as well as from every natted box. I never used to have this problem
> before:
>
> # time nslookup www.whales.org
> Server: localhost
> Address: 127.0.0.1
>
> Non-authoritative answer:
> Name: whales.org
> Address: 216.74.96.157
> Aliases: www.whales.org
>
> 2.62s real 0.00s user 0.00s system
Hmm, two seconds or maybe three in order to resolve a host or domain name
isn't much imho. Sometimes it takes even longer, depending on the domain
you wish to resolve. Try for example www.wz.zj.cn :-)
Btw, why don't you use dig instead of nslookup.
Bye,
Mipam.