| From: | Andrew - Supernews <andrew+nonews(at)supernews(dot)com> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [PATCHES] Patch for UUID datatype (beta) |
| Date: | 2006-09-19 22:02:40 |
| Message-ID: | slrneh0q80.2ea3.andrew+nonews@atlantis.supernews.net |
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| Lists: | pgsql-hackers pgsql-patches |
On 2006-09-19, mark(at)mark(dot)mielke(dot)cc <mark(at)mark(dot)mielke(dot)cc> wrote:
> Different UUID forms can be unique within their domain. As long as I
> control the MAC address assignment for all of my units, my MAC address
> can be guaranteed to be unique across space and time,
You do not know (and can never know) that no-one else is using the same
MAC address. Anyone with substantial experience in networking will tell
you that the supposed "uniqueness" of manufacturer-assigned MACs is often
a myth, with (in extreme cases) entire batches of NICs being manufactured
with the same assigned MAC.
--
Andrew, Supernews
http://www.supernews.com - individual and corporate NNTP services
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