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Old 05-12-2004, 07:05 PM   #1
Torky
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Registered: May 2004
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Strange DNS problem (Debian)


Hello there,

i have Debian Woody running on my server/router for quite a time now, and everything works fine with my win2k machine. Last week i installed Debian Testing/Unstable at my notebook, and nearly everything is running fine .. *nearly* everything. Somehow DNS is "broken".

Here the facts.
if i do a "nslookup hostname" or "host hostname" i get an ip within one second.

but now if i do "ping hostname" its takes between 6 to 10 seconds until the hostname is resolved and the first ping goes out.
Same thing with lynx or firefox or whatever As you can imagine browsing is a real pain that way.

I tried several DNS Servers, i also set up a DNS at my Router - no change.

some files

/etc/resolv.conf
Code:
search
nameserver 217.5.113.240
nameserver 194.25.2.129
as i said, i tried several other nameservers (those are from t-online now), all reachable and working good on my windows machine. i also tried it without the "search" line.

/etc/host.conf
Code:
order bind,hosts
multi on
/etc/network/interfaces
Code:
auto eth0
iface eth0 inet static
        address 192.168.0.18
        netmask 255.255.255.0
        network 192.168.0.0
        broadcast 192.168.0.255
        gateway 192.168.0.1
192.168.0.1 is my router of course

i don't have any clue what else to do ..

one thing i noticed .. i got freenet.de at first as apt-source, when this hostname was looked up it looked like ipv6 ##:##:##:## style but i don't use ipv6 (afaik ..). i changed the line in /etc/apt/sources.lst and never saw something like ipv6 again.

maybe someone here has an idea?
 
Old 05-12-2004, 07:20 PM   #2
peacebwitchu
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Registered: Apr 2004
Distribution: Debian
Posts: 185

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Have you tried setting the /etc/host.conf order from

order bind,hosts

to

order hosts,bind

Also could you post your


hostname -f

and /etc/hosts file.
 
Old 05-13-2004, 04:19 AM   #3
Torky
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Registered: May 2004
Posts: 4

Original Poster
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Code:
torky@wotan:~$ hostname -f
localhost
/etc/hosts
Code:
127.0.0.1       localhost       wotan
192.168.0.18    wotan
192.168.0.1     gilgamesh
192.168.0.17    torky
changing the order of bind,hosts in host.conf didn't have any noticeable effect.

Last edited by Torky; 05-13-2004 at 04:20 AM.
 
Old 05-13-2004, 08:49 AM   #4
peacebwitchu
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Distribution: Debian
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try taking the search string out of /etc/resolv.conf
In the man page for /etc/resolv.conf it states that this can cause timeouts in some situations.
 
Old 05-13-2004, 11:56 AM   #5
Torky
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Registered: May 2004
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Re: Strange DNS problem (Debian)

Quote:
Originally posted by Torky
as i said, i tried several other nameservers (those are from t-online now), all reachable and working good on my windows machine. i also tried it without the "search" line.
today i tried the laptop in 2 other networks - same effect so it *hast* to do s.th. with that machine, but i still don't have any clue
 
Old 06-21-2004, 07:46 PM   #6
yichun
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Registered: Mar 2004
Distribution: Debian Sid
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Has your problem solved? I met the same problem. I put a line to prevent ipv6 module from loading in /etc/modules.conf, but when 'lynx url' the lynx still go on to search ipv6 address first. I do not know anyone has solved this. Strangely seems many has no this problem.
 
Old 06-22-2004, 04:02 AM   #7
Torky
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Registered: May 2004
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not really "solved" but since i am using a dns from my university (i still dial in with t-online!) its a lot better, first look needs still about 2s, but after that all dns lookups dont need more time then that.

i noticed that dns is slower again, if i use more then one dns.
 
  


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