Skip site navigation (1)Skip section navigation (2)
Date:      Tue, 22 Jan 2002 08:23:45 +1100
From:      Edwin Groothuis <edwin@mavetju.org>
To:        Vlado Korcek <vladokorcek@hotmail.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: DNS query repeated
Message-ID:  <20020122082345.F823@k7.mavetju.org>
In-Reply-To: <F244LEdyt3cew8k69RK00000d58@hotmail.com>; from vladokorcek@hotmail.com on Mon, Jan 21, 2002 at 05:26:15PM %2B0000
References:  <F244LEdyt3cew8k69RK00000d58@hotmail.com>

next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, Jan 21, 2002 at 05:26:15PM +0000, Vlado Korcek wrote:
> Does anybody have any idea why DNS resolver still repeat his query to DNS 
> server.
> I tried for some test purposes ping6 with the name:
>   # ping6 Nr-5_v6.my.domain
> 
> I saw in Ethereal that the query from DNS client was sent and response from 
> DNS server (for PTR type) as well.

I don't see this behaviour at all.

[~] edwin@k7>ping ftp.netbsd.org
PING ftp.netbsd.org (204.152.184.75): 56 data bytes
64 bytes from 204.152.184.75: icmp_seq=0 ttl=244 time=555.729 ms
64 bytes from 204.152.184.75: icmp_seq=1 ttl=244 time=550.002 ms
64 bytes from 204.152.184.75: icmp_seq=2 ttl=244 time=600.225 ms
64 bytes from 204.152.184.75: icmp_seq=3 ttl=244 time=540.254 ms
64 bytes from 204.152.184.75: icmp_seq=4 ttl=244 time=580.276 ms
64 bytes from 204.152.184.75: icmp_seq=5 ttl=244 time=570.234 ms
[...]

[~] edwin@k7>tcpdump -ni lo0 port 53
tcpdump: listening on lo0
08:21:35.764017 127.0.0.1.2223 > 127.0.0.1.53:  8096+ A? ftp.netbsd.org. (32)
08:21:36.457394 127.0.0.1.53 > 127.0.0.1.2223:  8096* 1/5/8 A 204.152.184.75 (299)

[~] edwin@k7>tcpdump -ni tun0 port 53
tcpdump: listening on tun0
08:21:35.764436 203.173.130.76.4062 > 155.53.1.253.53:  28761 A? ftp.netbsd.org. (32)
08:21:36.456656 155.53.1.253.53 > 203.173.130.76.4062:  28761* 1/5/8 A 204.152.184.75 (299)

It just stops at that point regarding dns-traffic.

Edwin

-- 
Edwin Groothuis   |              Personal website: http://www.MavEtJu.org
edwin@mavetju.org |           Interested in MUDs? Visit Fatal Dimensions:
------------------+                       http://www.FatalDimensions.org/

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020122082345.F823>