Re: IPv6 day and tunnels

[Joel Maslak <jmaslak () antelope net>]

On Jun 3, 2012, at 7:38 PM, Joe Maimon <jmaimon () ttec com> wrote:

> www.arin.net works and worked for years. www.facebook.com stopped June 1.
>
> So IPv6 fixes the fragmentation and MTU issues of IPv4 by how exactly?

It doesn't fix the fragmentation issues.  It assumes working PMTU.

For what it's worth, I also use a tunnel without issue to reach www.facebook.com via IPv6, with an MTU of 1476 (since 
it's running over a 1492 byte IPv4 PPoE tunnel...).