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Linux - Networking This forum is for any issue related to networks or networking.
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Old 12-22-2009, 12:03 PM   #1
bucovaina78
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Registered: Oct 2004
Location: Belgium / Antwerp
Distribution: Debian
Posts: 287

Rep: Reputation: 33
Slow internet connection iptraf shows a lot of UDP port 53 (Domain) traffic


Well,

My internet connection is very slow. Surfing takes a lot of time before sites show up. In w3m I see "opening socket" for a long time but when it finds the site it's there immediately. I also have a Windows PC here and it works just fine.

My setup is as follows.

192.168.2.x connects to my router. and I have another network behind 192.16.2.x which is 192.168.1.x that is connected to all my Linux machines. If I try to connect my linux machines to the network that connects immediately to my Router (internet) it makes totally no difference.

iptraf shows a lot of UDP-traffic again and again port 53, once it stops showing those 53-lines it starts to transfer at higher rates and the site is loaded at normal speeds. My max download/upload is something about 500KB/s Down and 60KB/s up, this should be more than fast enough for w3m internet surfing isn't it?

Someone familiar with this problem?

Thanks

Wannes
 
Old 12-22-2009, 12:16 PM   #2
nimnull22
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Registered: Jul 2009
Distribution: OpenSuse 11.1, Fedora 14, Ubuntu 12.04/12.10, FreeBSD 9.0
Posts: 1,571

Rep: Reputation: 92
You may need to disable IPv6. Try to search in google how to do this for your linux.
 
Old 12-22-2009, 12:25 PM   #3
bucovaina78
Member
 
Registered: Oct 2004
Location: Belgium / Antwerp
Distribution: Debian
Posts: 287

Original Poster
Rep: Reputation: 33
Hi

Thanks for your swift respones. But the problem stays the same.

I added a file

/etc/modprobe.d/00local

and added following lines:

Code:
alias net-pf-10 off
alias ipv6 off
I can still see a lot of DNS-requests. they come from all kinds of ports on my box and all direct to port 53 on my router.

Small edit:

How can I check if ipv6 is really disabled this time?

edit again:

with

Code:
lsmod | grep ip
and it should NOT be listed?

Last edited by bucovaina78; 12-22-2009 at 12:39 PM.
 
Old 12-22-2009, 01:53 PM   #4
nimnull22
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Registered: Jul 2009
Distribution: OpenSuse 11.1, Fedora 14, Ubuntu 12.04/12.10, FreeBSD 9.0
Posts: 1,571

Rep: Reputation: 92
Do please, and post output for: ifconfig -a
 
  


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