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Date:	Sun, 09 Sep 2012 17:39:03 -0400 (EDT)
From:	David Miller <>
Subject: Re: [PATCH v2] net-tcp: TCP/IP stack bypass for loopback

From: Jan Engelhardt <>
Date: Sun, 9 Sep 2012 19:54:42 +0200 (CEST)

> On Thursday 2012-08-23 13:40, Eric Dumazet wrote:
>>On Thu, 2012-08-23 at 11:57 +0100, Pádraig Brady wrote:
>>> Just to quantify the loopback testing compat issue.
>>> I often do stuff like the following to test latency.
>>> Will that be impacted?
>>>   tc qdisc add dev lo root handle 1:0 netem delay 20msec
>>Yes this will. At least for tcp traffic this wont "work".
>>TCP friends bypass layers, by directly queuing skbs to sockets.
>>-> no iptables, 
> If it amounts to that, you will have upset users rather soon.

This is over "loopback", you're just being rediculous.  %99.9999 of
people simply do not care.
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