RE: Why do the 6to4-6bone relays work so badly? Is it possible to use 2002:c058:6301:: with XP?

Anssi Porttikivi wrote:
> I am using XP and I have tried with the default MS relay, 
> 6to4.ipv6.funet.fi and 6to4.kfu.com and various other relays. 
> I seldom get to ping to any 3ffe or 2001 addresses. Why? It 
> feels almost like the public "relays" would just be 6to4 
> routers with no 6bone connection? Or is 6bone routing totally 
> screwed up? Or are the IPv6 firewalls stopping my ICPM packets?
> 
> Can I use 2002:c058:6301:: (6to4-6bone relay anycast) with 
> XP? Looks like not. ...

It is more likely that you will get help with questions like these on
the MS list: [email protected]
You might also check the XP IPv6 FAQ at www.microsoft.com/ipv6

FWIW, I use XP through the MS or Cisco relays regularly without
problems.



Pekka Savola wrote:
> The Microsoft implementation makes a ludicrous assumption 
> (that the relay address is 2002:<V4ADDR>::<V4DDR>, note the 
> IID part) which seem to be only true for their relay.
>  
> Bad for IPv6 but I guess they deserved it.

That is the only reasonable choice when there is only a A record to work
from.



Brian E Carpenter wrote:

> I'd like to point out that the usage of 6to4 addresses built 
> into Windows XP is not the usage described in the Proposed 
> Standard for 6to4 (RFC 3056), which talks about 6to4 
> *routers*. Nobody has published a document describing host 
> usage of 6to4.

The XP 6to4 function is a router, that happens to be co-resident in the
same OS with the host. If there are multiple interfaces in the box, it
acts as a normal router per 3056 (my laptop does this all the time for
the VMware guest OS's).  

Tony