Subject: Re: How to use properly ipv6 autoconf over a router interface?
To: Steven M. Bellovin <firstname.lastname@example.org>
From: Hubert Feyrer <email@example.com>
Date: 05/04/2006 23:52:11
On Thu, 4 May 2006, Steven M. Bellovin wrote:
>> Seems like RSIP (RFC 3102-3105) could work well here.
> RSIP is a form of NAT. It's cleaner and better than traditional NAT, but
> it is NAT-like. Also note that the protocols are experimental, not
> standards track. I don't think anyone has tried to use them with v6.
Indeed, the IESG note at the top of RFC 3102 looks scary enough not to go
The IESG notes that the set of documents describing the RSIP
technology imply significant host and gateway changes for a complete
implementation. In addition, the floating of port numbers can cause
problems for some applications, preventing an RSIP-enabled host from
interoperating transparently with existing applications in some cases
(e.g., IPsec). Finally, there may be significant operational
complexities associated with using RSIP. Some of these and other
complications are outlined in section 6 of RFC 3102, as well as in
the Appendices of RFC 3104. Accordingly, the costs and benefits of
using RSIP should be carefully weighed against other means of
relieving address shortage.