[Bloat] enabling outgoing tcp-ecn by default for ipv6 links

[Hannes Frederic Sowa]

Hello!

On Thu, Dec 27, 2012 at 12:04:57AM -0500, Michael Richardson wrote:
> >>>>> "Hannes" == Hannes Frederic Sowa <hannes at stressinduktion.org> writes:
>     Hannes> I am thinking about advancing the ipv4/tcp_ecn knob in linux to
>     Hannes> distinguish between ipv4 and ipv6 transport and enable ecn signaling
>     Hannes> on outgoing ipv6 connections by default (for me, at least). I am
>     Hannes> currently doing so with the help of iptables (echo 1 > tcp_ecn and -j
>     Hannes> ECN --ecn-tcp-remove).
> 
> I think it's definitely worth splitting the sysctl, so that we can at
> least learn if it can fly in v6 land.  I'd turn it on.

I had some spare time and posted a patch:
<http://article.gmane.org/gmane.linux.network/253691>

> I suggest that doing this without a way to report on a path/IP/vendor
> that is screwing things up is a mistake.
> 
> http://urchin.earth.li/ecn/
> 
> went inactive again in 2011.

Will look into this now.

Greetings,

  Hannes