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To: cipe-l,AT,inka,DOT,de
Subject: Quake 3 with cipe
From: Richard Gregory <R.Gregory,AT,liverpool,DOT,ac,DOT,uk>
Date: Mon, 08 Dec 2003 12:41:11 +0000

Hi All,

Noticed a problem with Quake 3 network traffic when routed over cipe. Quake 3 sends four times as many UDP packets to the game server as it does when outside the tunnel (or in a ssh/pppd tunnel). This problem only happens when the Quake3 client runs on an XP machine, reboot into Linux and the packet rate becomes one-to-one.

This is still the case when the Linux Q3 config file is copied over the Q3 XP config. All in all, suggesting some sort of interaction problem with cipe and XP, but I've no idea what. Does anybody have any suggestions?

Some background... Quake does most of its communications using UDP port 27960. The game server sends packets out representing the current state of the game at a rate of around 25 per second, ~100 bytes each to port 27960. The clients send back packets representing the users actions, at around the same rate, size and the same UPD port.

The machine layout consists of the 'game machine' - dual booting between XP and RedHat 7.3; a RedHat 7.3 firewall machine running cipe connected to the internet with adsl. The Q3 server and another cipe runs on a RedHat 9 machine directly connected to the internet.



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