Vincent, Thanks. That URL explained a lot.
On Tue, Jan 9, 2018 at 3:11 AM, Vincent Bernat <ber...@luffy.cx> wrote: > ❦ 8 janvier 2018 15:08 -0800, joel jaeggli <joe...@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) >