nick at netability.ie
Fri Aug 25 14:52:10 CEST 2006
> PMTUD problems aren't caused by any particular MTU, but by the source
> host not seeing "packet too big" messages. If you remove this router
> and use one that allows for a bigger MTU the problem will simply
> resurface once packets hit another link with a smaller MTU.
This is true, but it's also true that having links with MTU < 1500 tends
to cause trouble. Of course, in a perfect world, you could run at any
MTU you cared for, but we don't live in that world.
More information about the ipv6-ops