6bone access from behind NAT

[Pekka Savola]

On Fri, 7 Dec 2001, Pekka Savola wrote:
> On Thu, 6 Dec 2001, Michael Kjorling wrote:
> > Also, I noted this in the 'ipv6 if' output:
> > 
> > > Interface 3 (site 1): 6-over-4 Virtual Interface
> > >   uses Neighbor Discovery
> > >   sends Router Advertisements
> > >   forwards packets
> > >   link-level address: 192.168.50.1
> > >     preferred address fe80::c0a8:3201, infinite/infinite
> > 
> > Just a question to the gurus here - wouldn't the address be
> > 2001:c0a8:3201::? http://www.6bone.net/6bone_6to4.html seems to imply
> > this, if I read the text correctly: "A special IPv6 routing prefix
> > (2002::/16) is used to indicate that the remaining 32-bits of the
> > external routing prefix contain the IPv4 end-point address of a
> > boundary IPv6 router for that site that will respond to IPv6 in IPv4
> > encapsulation."
> 
> Packets to private addresses and their 6to4 equivalents MUST not be 
> discarded.  You need a global address, otherwise you can't use 6to4.

Doh.  MUST be discarded, of course.  Sorry! 

-- 
Pekka Savola                 "Tell me of difficulties surmounted,
Netcore Oy                   not those you stumble over and fall"
Systems. Networks. Security.  -- Robert Jordan: A Crown of Swords