SSL over IPv6 broken in Firefox for Windows...

[Jeroen Massar]

Alexander Mayrhofer wrote:
> Hello,
> 
> A colleague of mine has recently found out that the popular Firefox web
> browser fails on https-URLs over IPv6, but only on Windows (Linux works
> fine). The only way to get https sites working is to disable IPv6 in the
> browser - not very useful for fostering IPv6 deployment. The full bug
> report is here:

Strange.... I use IPv6+SSL every day with Firefox on Windows XP, and it
works like a charm...

I think I've been going to https://www.sixxs.net/ for at least 8 years
now and that with Firefox on Windows...

Tracepath6 tells me:

 8:  deham01.sixxs.net                         20.776ms asymm  7
 9:  deham01.sixxs.net                         20.700ms pmtu 1480
 9:  bane.makhutov-it.de                       37.214ms reached
 9:  bane.makhutov-it.de                       37.520ms reached

I would not be surprised that somebody has an MTU issue somewhere...
1480 is definitely not the standard for tunnels and might also be a
problem in other places. Check all your settings(tm).

Timatio also ends in:

 8:  2a01:190:1701::12                         28.616ms asymm  9
 9:  2a01:190:1701::12                         28.568ms pmtu 1480
 9:  2a02:850:3:3::9327                        49.000ms reached
 9:  2a02:850:3:3::9327                        49.082ms reached
     Resume: pmtu 1480 hops 9 back 55


Might I suggest checking https://www.sixxs.net or https://unfix.org ? :)
(requires CACert or just click 'accept' ;)

Greets,
 Jeroen

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