Re: IPv6 Support on Windows

["Kris Katterjohn" <katterjohn () gmail com>]

On Sun, May 11, 2008 at 8:23 PM, jah <jah () zadkiel plus com> wrote:
>  Hi all.

Hey Jah, thanks for the report and tracking the problem down.

>  I've got IPv6 installed on two directly connected XP machines (this
>  didn't need a download, it is already present and just requires
>  installing).  My router does not support IPv6, but I guess for directly
>  connected hosts, the magic happens at layer 2.
>
>  I can ping each machine from the other and capture ICMPv6 (Echo request
>  and reply and Neighbor solicitation and advertisement) traffic with
>  wireshark.  In order to do this, I have to append the link-local
>  interface number (so-called Zone ID) [1] to the address like so:
>
>  ping fe80::20f:b5ff:fe47:7879*%6*
>
>  if I don't append %6 I get "Destination *net* unreachable" from ping.
>
>  If I run nmap like so:
>  nmap -6 -n -PN -sT -d9 -p80 fe80::20f:b5ff:fe47:7879%6
>
>  I get a Reason "host-unreach" - as I do if I don't append the %6 to the
>  nmap command.
>
>  I stepped my way through the code and confirmed that I get 10065
>  WSAEHOSTUNREACH "No route to host".  And I found that the %6 is lost
>  during Target::GenerateIPString() in Target.cc and this seems to be down
>  to the code in inet_ntop.c - bit vague, I know.
>
>  So, have I missed something or is this something that needs doing to
>  nbase?  Has anyone else managed to use IPv6 on directly connected targets?

Hmm.. I hadn't tried this until today.  I got Nmap working across the
internet easily with hosts like www.kame.net, www.ipv6.org and
ipv6.google.com using Teredo ("netsh interface ipv6 set teredo
client").  Does this work for you?

I set up another box with IPv6 on my LAN and I'm now running into the
same problems with it that you are.  I'll look into this more this
upcoming week if nobody has any ideas.

>  Regards,
>  jah

Thanks again,
Kris Katterjohn

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