Test your connectivity for World IPv6 Day

[Fred Baker]

On Jun 6, 2011, at 8:58 AM, Rémi Després wrote:

> Unless there are good reasons to know that a longer PMTU applies to all their connections, all servers SHOULD send IPv6 packets to off-link destinations with 1280 octets as default PMTU.
> Servers that don't do that are open for PMTU problems. 

I understand where you're coming from, but I disagree. I think servers and the networks supporting them need to implement PMTU. The way to do that is (pick one) RFC 4821 in TCP or to manage to not block ICMPv6.