netdev
[Top] [All Lists]

Re: IPv6 fragmentation and IPv6 header parsing

To: netdev@xxxxxxxxxxx
Subject: Re: IPv6 fragmentation and IPv6 header parsing
From: Michael Richardson <mcr@xxxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 03 Aug 2001 16:58:02 -0400
In-reply-to: Your message of "Fri, 03 Aug 2001 19:50:51 BST." <20010803195051.B15145@raq299.uk2net.com>
Sender: owner-netdev@xxxxxxxxxxx
-----BEGIN PGP SIGNED MESSAGE-----


>>>>> "Mark" == Mark Baker <mark@xxxxxxxxxx> writes:
    >> As there are no huge technical or address allocational reasons why
    >> ISP's could not give at least /64, those ISP's that do get more
    >> popular and ones dealing /128's do not, and disappear from IPv6
    >> market.

    Mark> There are, however, technical reasons why ISPs might want to use
    Mark> dynamic IPs (if they have lots of dial-up hardware in different
    Mark> locations, routing issues make static IP difficult), so although
    Mark> their customers would get a /64, it might be a different one every
    Mark> time they dial up.

    Mark> In that situation, since I wouldn't want addresses on my local
    Mark> network to keep changing, I would want to use NAT to translate the
    Mark> address block assigned by the ISP onto some site local address
    Mark> space.

  You might use 1:1 NAT (not NAPT), but that would be a mistake.

  1) you use site local addresses to talk between hosts locally.
  2) you use router advertisements to get a public address for your network.
  3) you use TSIG signed updates to a DNS server to get your addresses
     into a DNS server. (possibly, just updating a single A6 record)

  This is all possible *NOW*.

  No need for NAT.
     
]       ON HUMILITY: to err is human. To moo, bovine.           |  firewalls  [
]   Michael Richardson, Sandelman Software Works, Ottawa, ON    |net architect[
] mcr@xxxxxxxxxxxxxxxxxxxxxx http://www.sandelman.ottawa.on.ca/ |device driver[
] panic("Just another NetBSD/notebook using, kernel hacking, security guy");  [

     



-----BEGIN PGP SIGNATURE-----
Version: 2.6.3ia
Charset: latin1
Comment: Processed by Mailcrypt 3.5.6, an Emacs/PGP interface

iQCVAwUBO2sQWYqHRg3pndX9AQEifQP9H8NzYUBi6Sgif+7Ut8UP7A3B6tSZBZ5G
JuZjdZXZx6c4+lHSCFLqHaHu3Zl5cEBq8ckEfNMO8C76KUVo5JTEk3C45kQ/SyPp
JITSVAHPMuDZZ87ubbWYLKHOlt02BbiCi6dqDQcmOqmjKj1OkBZ15VDLpQcg+hQ5
tiaXaOUiQAg=
=5l5w
-----END PGP SIGNATURE-----

<Prev in Thread] Current Thread [Next in Thread>