On Monday December 05 2016 09:07, you wrote to me:
MV>> That was then when I had tunnels. But now that I have native MV>> IPv6, it has been stable for a week. My website has been MV>> reacheable over IPv6 all the time...
TK> It has to be your XP, because I'm running portproxy at win2003 server TK> without any problems.
I think it is AICCU or the combination of AICCU and XP. Since I have disabled my SixXs tunnel, the portproxy works OK.