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6bone access from behind NAT
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
Packets to private addresses and their 6to4 equivalents MUST not be
discarded. You need a global address, otherwise you can't use 6to4.
Shipworm (see http://www.6bone.net/ngtrans/) is a solution for access with
private addresses, ie. in cases where your operator or your IPv6-incapable
DSL/cable modem performs NAT.
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