Subject: Re: UDP path MTU discovery

From: Andi Kleen <[email-masked]>
Date: Tue, 30 Mar 2010 18:06:02 +0200

> Right again. Unlike IPv4, however, IPv6 does not allow
> in-the-network fragmentation. So when in doubt, apps
> that need to send isolated packets that may violate the
> path MTU should really perform host-based fragmentation
> with a maximum fragment size of 1280. Isn't there a
> socket option "IPV6_USE_MIN_MTU" that apps can use to
> force fragmentation on large packets (RFC3542)?

Thanks for the pointer. The option is right now only defined,
but not implemented.  But yes it would help. 

-Andi
-- 
[email-masked] -- Speaking for myself only.