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Re: (ngtrans) Sites with multiple 6to4 border routers

Michael Richardson <mcr@sandelman.ottawa.on.ca> Tue, 27 March 2001 21:49 UTC

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To: NGTRANS List <ngtrans@sunroof.eng.sun.com>
Subject: Re: (ngtrans) Sites with multiple 6to4 border routers
In-reply-to: Your message of "Tue, 27 Mar 2001 14:36:39 CST." <3AC0F9D7.BFDEDC10@hursley.ibm.com>
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Date: Tue, 27 Mar 2001 16:38:27 -0500
From: Michael Richardson <mcr@sandelman.ottawa.on.ca>
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Reply-To: Michael Richardson <mcr@sandelman.ottawa.on.ca>

>>>>> "Brian" == Brian E Carpenter <brian@hursley.ibm.com> writes:
    mcr> My question is, assuming that one got the block, couldn't one configure
    mcr> a 6to4 address at each connection point in that connection points' native
    mcr> IPv4 prefix, and advertise a route to a proper IPv6 prefix via two different
    mcr> 2002: prefixes?

    Brian> I don't see why not. In an IPv6 routing domain, 6to4 prefixes behave like
    Brian> any /48 prefix.

  So, the problem that sites who did 6to4 because of lack of v6 ready ISPs
now face is that of getting:
    1) getting an AS #    (if they didn't have one already)
    2) getting a v6 block (given that their ISPs aren't cooperating)

  These are political issues. 
  (The situation where a site has multiple connections, but isn't officially
multihomed due to internal use of rfc1597 and NATs is rather common. They may
want to be deploying IPv6 to get rid of this headache. So, IPv6 may in fact
cause *more* multihoming to appear!!!)

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