Re: hotmail not dealing with ECN

Matti Aarnio
2001-01-26T10:38:17Z

On Thu, Jan 25, 2001 at 05:30:29PM -0800, David S. Miller wrote:
...
> Thirdly, it was widely discussed by the ECN reserachers on how to
> "detect ECN blackholes" sort to speak. All such schemes suggested
> we unusable, it is not doable without impacting performance _and_
> violating existing RFCs. Basically, you have to ignore a valid TCP
> reset to deal with some of the ECN holes out there, that is where such
> workaround attempts become full crap and are unsatisfactory for
> inclusion in any implementation much less an RFC. Happily, we got the
> ECN folks to agree with Alexey and myself on these points.
>
> So turning it off on a per-connection basis is not really an option.

But could you nevertheless consider supplying a socket option for it ?
By all means default it per sysctl, but allow clearing/setting by
program too.

...
> Later,
> David S. Miller
> davem@redhat.com

/Matti Aarnio