nanog mailing list archives
Re: looking for terminology recommendations concerning non-rooted FQDNs
From: Andrew Sullivan <asullivan () dyn com>
Date: Fri, 22 Feb 2013 14:01:05 -0500
On Fri, Feb 22, 2013 at 01:39:21PM -0500, Jay Ashworth wrote:
but since the dot is a separator (I believe by definition), if it exists at the end, it has to be separating *something*.
Without getting into metaphysics, we can think of the dot in the presentation format as representing the separators in the wire format. In the wire format, of course, these separators are octets that indicate the size of the next label. And since the final label is null, the separator indicates a zero length in the wire format. Therefore, in the presentation format, the final separator is indicative of the (null) root label after. But if we want to skirt metaphysics, the problem here is the status of the presentation vs. wire format. If these are two perfectly co-equal forms of representation, then we have a funny problem, since in the global DNS the wire format is _never_ a relative lookup (the search path gets appended before lookup). If on the other hand the presentation format is merely one for human consumption, and the wire format is canonical, then there's just a representational problem. This of course doesn't actually help with the original question, which is how to refer to all these things unambiguously. I have no idea how to solve that: the different terms have an established use, and fixing ambiguities in established use is a problem far beyond the bounds of networking. A -- Andrew Sullivan Dyn, Inc. asullivan () dyn com v: +1 603 663 0448
Current thread:
- Re: looking for terminology recommendations concerning non-rooted FQDNs, (continued)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Rich Kulawiec (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Jay Ashworth (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Jay Ashworth (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Mark Andrews (Feb 23)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Andrew Sullivan (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Joe Abley (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Jay Ashworth (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Joe Abley (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Jay Ashworth (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Joe Abley (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Andrew Sullivan (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Eric Brunner-Williams (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Andrew Sullivan (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Barry Shein (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Cutler James R (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Jay Ashworth (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Jimmy Hess (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Jay Ashworth (Feb 22)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Mark Andrews (Feb 23)
- Re: looking for terminology recommendations concerning non-rooted FQDNs Andrew Sullivan (Feb 23)
- RE: looking for terminology recommendations concerning non-rooted FQDNs Keith Medcalf (Feb 23)