kern/115413: [ipv6] ipv6 pmtu not working

[Daniel Hartmeier]

On Tue, Aug 21, 2007 at 04:16:51PM +0200, Jacek Zapala wrote:

> I have disabled this on sending side (FreeBSD) and it started to work!

Ah, so it's related to window scaling. Headaches again ;)

Is the following a correct view of your setup:

  src ---- $int_if pf $ext_if ---- router ---- dst

Where client src connects to server dst, and you create the state entry
when the initial TCP SYN goes out $ext_if on the firewall?

The ICMPv6 is coming in on $ext_if, in the reverse direction, relative
to the initial TCP SYN?

And the router is between pf and dst, on the $ext_if side?

Daniel