On 18September2015Friday, at 11:55, Paul Hoffman <paul.hoff...@vpnc.org> wrote:
> On 15 Sep 2015, at 9:46, Stephen Farrell wrote:
>
>> Is a domain a sub-domain of itself?
>
> No. The quoted definition from RFC 1034 starts off "A domain is a subdomain
> of another domain..." There is no language in RFCs 1034 or 1035 that indicate
> that a domain can be a subdomain of itself.
I’m going to sit with Stephen on this specific idea. Set theory
supports the claim that a domain can be a sub-domain of itself. Indeed RFC 973
calls out the original specifications (RFC 882, RFC 883)
allowed for recursion and inheritability and suggests that these constructs had
value and merit, but IMPLEMENTATION problems suggested not allowing them.
So if one were to capture this implementation artifact in a terminology
document, it would be a good to point out why this implantation artifact exists.
>
>> Do we care?
>
> We would if it could be, since there could be ramifications.
>
> --Paul Hoffman
>
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