Subj : Tunnel
To   : Michiel van der Vlist
From : Andrew Leary
Date : Sun Apr 10 2016 21:25:17

Hello Michiel!

11 Apr 16 00:06, you wrote to Tommi Koivula:

 MV> Hello Tommi,

 MV> On Friday April 08 2016 09:02, you wrote to me:

 >>> WinXP supports privacy extension. It is on by default. But there
 >>> is also the SLAAC address. If PE is enabled, it will use the PE
 >>> address for outgoing connections. But the machine will always
 >>> answer to the static address as well.

 TK>> WinXP/2003 always uses the SLAAC address for outgoing by default,

 MV> Not WinXP. Definitely not. The whole idea op PE it that it does NOT
 MV> use de SLAAC address (from which your MAC address can be gleened) by
 MV> default for outgoing, but the random PE address that chages every 24
 MV> hours.

 TK>> Listen on IPv6:             Connect to IPv4:
 TK>> Address         Port        Address         Port
 TK>> --------------- ----------  --------------- ----------
 TK>> 2001:470:1f15:cb0:f1d0:2:221:0 24554       192.168.1.2     24554
 TK>> 2001:470:1f15:cb0:f1d0:2:221:1 24554       192.168.1.2     24554
 TK>> 2001:470:1f15:cb0:f1d0:2:221:0 23          192.168.1.2     23
 TK>> 2001:470:1f15:cb0:f1d0:2:221:0 3141        192.168.1.2     3141
 TK>> ===

 MV> What is port 3141?

VMODEM, most commonly implemented on OS/2 systems using Ray Gwinn's SIO/SIO2K 
serial drivers.

Tommi is using the portproxy to forward IPv6 traffic for his OS/2 system(s) to 
the IPv4 address that OS/2 is actually using.  I've considered doing something 
similar, as it would allow an IPv6 only node to connect to my OS/2 system, as 
long as the portproxy machine was up and running.

Andrew

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