linux-kernel - Re: IPv6: Connection reset/timeout under heavy load

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Date:	Tue, 27 Mar 2007 12:18:29 +0200
From:	Eric Dumazet <dada1@...mosbay.com>
To:	Agoston Horvath <agoston@...e.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: IPv6: Connection reset/timeout under heavy load

On Tue, 27 Mar 2007 11:45:46 +0200
Agoston Horvath <agoston@...e.net> wrote:

> Hello,
> 
> I'm trying to add ipv6 support to the RIPE whois-server. I'm going with the dual-stack address familiy independent solution (/proc/sys/net/ipv6/bindv6only is set to 0).
> I've written a small piece of code which tests how the server behaves under heavy load. It basically creates a specified number of threads and hammers the query port of the server with logged real-world queries. This works fine over ipv4. But if I switch to ipv6 (meaning, instead of the ipv4 address of eth0, I give the ipv6 one to getaddrinfo()), strange connection reset/timeout problems arise. This is especially strange because it's all AF-independent, so the very same piece of code runs fine for ipv4, but fails for ipv6.

Hello Agoston

Could you please repost your mail on netdev@...r.kernel.org, because this address is more appropriate to get in touch with networking guys :)

Thank you
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