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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Dave Taht <dave.taht@gmail.com>
Date: Tue, 28 Jul 2015 16:52:35 +0200
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Cc: bloat <bloat@lists.bufferbloat.net>,
	Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr>
Subject: Re: [Bloat] AQM and PPP on Linux
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On Tue, 2015-07-28 at 16:44 +0200, Dave Taht wrote:

> 
> 4) setting the default qdisc to be fq_codel in the sysctl works on
> most dynamically created devices, but does not work on devices that
> come up at boot time before the sysctls have a chance to run and the
> modprobes to complete. This is why fedora 22, for example, compiled in
> fq_codel statically, rather than dynamically.

It does not matter fq_codel is static or a module.

The thing is : the sysctl itself must be set to fq_codel before any
network device is brought up.

Since this is a user space policy, nothing prevents the script changing
sysctl to first load fq_codel module, then change sysctl.