nanog mailing list archives

Re: IPv6 Confusion


From: Mark Andrews <Mark_Andrews () isc org>
Date: Wed, 18 Feb 2009 10:55:30 +1100


In message <D34D7BAE-4781-4AE2-ABB2-6D211C9B7B85 () virtualized org>, David Conrad
 writes:
On Feb 17, 2009, at 11:28 AM, Tony Hain wrote:
Approach IPv6 as a new and different protocol.

Unfortunately, I gather this isn't what end users or network operators  
want or expect.  I suspect if we want to make real inroads towards  
IPv6 deployment, we'll need to spend a bit more time making IPv6 look,  
taste, and feel like IPv4 and less time berating folks for "IPv4- 
think" (not that you do this, but others here do).  For example,  
getting over the stateless autoconfig religion (which was never fully  
thought out -- how does a autoconfig'd device get a DNS name  
associated with their address in a DNSSEC-signed world again?) and  
letting network operators use DHCP with IPv6 the way they do with IPv4.

        David you know as well as I do that DNSSEC is a orthognal
        issue here.

        The first issue is how do you assign a name to a object?
        The second issue is how do you add that name to the DNS?
        The third issue is how do you sign that change?

        I solve it by give the machine a name.  Adding a KEY record
        at that name to the DNS, the private part the machine knows.
        I then use SIG(0) to update the address records of the
        machine whenever the addresses change.  The DNS server that
        accepts that update generated new RRSIGs for the records
        affected by that change and the zone propogates out to the
        servers using NOTIFY.

        I update the reverse PTR records using tcp-self as the
        authentication mechanism.  tcp-self is weak but is strong
        enough for the level of trust assigned to PTR records.
        Again the DNS server generates appropriate signatures.

        The machine's name is not tied to the network on which it
        lives.

        Mark
        
 
Or, we simply continue down the path of more NATv4.

Regards,
-drc


-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews () isc org


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