RE: [NSI-RRP] IP Address Uniqueness

From: Patrik Fältström (paf@swip.net)
Date: Fri Jun 30 2000 - 10:59:23 EDT

  • Next message: Hollenbeck, Scott: "RE: [NSI-RRP] IP Address Uniqueness"

    At 09.42 -0400 00-06-30, Hollenbeck, Scott wrote:
    >The aliasing suggestion I described appears to address both problems:
    >
    >1. Each IP address is associated with only one name server object (reducing
    >the management problem), and
    >2. Each name server object can have multiple aliases (supporting the DNS
    >data model).

    But, if we have what we have below:

    >What do you do if you have at registrar A:
    >
    >foo.com. IN NS ns.foo.com.
    >foo.com. IN NS ns.bar.com.
    >foo.com. IN NS ns.example.net.
    >bar.com. IN NS ns.bar.com.
    >bar.com. IN NS ns.foo.com.
    >bar.com. IN NS ns.example.net.
    >ns.foo.com. IN A 192.168.1.11
    >ns.bar.com. IN A 192.168.1.11
    >ns.example.net IN A 192.168.1.11
    >
    >Now, you transfer bar.com. to registrar B. What records are moved?
    >(The registry both A and B are using are registry for com and net.)

    That means that we have the following domain objects:

    (1) foo.com
       NS ns.foo.com
       NS ns.bar.com
       NS ns.example.net

    (2) bar.com
       NS ns.foo.com
       NS ns.bar.com
       NS ns.example.net

    the following nameserver object:

    (3) ns.foo.com
       A 192.168.1.11

    and the following aliases

    (4) ns.bar.com
       CNAME ns.foo.com

    (5) ns.example.net
       CNAME ns.foo.com

    Sorry for the notation, but I hope you get it...

    Ok, now we transfer the domain foo.com to registrar B, and what
    happens is that the nameserver object (3) is also transfered.

    What happens with object (4) and object (5)? Are they moved aswell?
    Is (4) turned into a host object which object (5) points to? Are the
    objects keeping their roles, but (1) and (3) are moved from one
    registrar to another? Who can change the IP address of ns.bar.com?
    Does the IP-address change imply that (4) is switched from an alias
    to a host, and then an IP-address is given to that host? How do one
    know if (5) then should be an alias to object (3) or object (4)? Can
    one have an alias refering to another alias?

    :-)

    Millions of questions...

       paf
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