MTU to CDN's

Dovid Bender dovid at telecurve.com
Thu Jan 18 20:21:53 UTC 2018


Vincent,

Thanks. That URL explained a lot.

On Tue, Jan 9, 2018 at 3:11 AM, Vincent Bernat <bernat at luffy.cx> wrote:

>  ❦  8 janvier 2018 15:08 -0800, joel jaeggli <joelja at bogus.com> :
>
> >> N00b here trying to understand why certain CDN's such as Cloudfare have
> >> issues where my MTU is low. For instance if I am using pptp and the MTU
> is
> >> at 1300 it wont work. If I increase to 1478 it may or may not work.
> > PMTUD has a lot of trouble working reliability when the destination of
> > the PTB  is a stateless load-balancer.
>
> More explanations are available here:
>  https://blog.cloudflare.com/path-mtu-discovery-in-practice/
> --
> Don't comment bad code - rewrite it.
>             - The Elements of Programming Style (Kernighan & Plauger)
>



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