Re: [PATCHES] Patch for UUID datatype (beta) - Mailing list pgsql-hackers

From Andrew - Supernews
Subject Re: [PATCHES] Patch for UUID datatype (beta)
Date
Msg-id slrneh0q80.2ea3.andrew+nonews@atlantis.supernews.net
Whole thread Raw
In response to Re: [PATCHES] Patch for UUID datatype (beta)  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: [PATCHES] Patch for UUID datatype (beta)  (mark@mark.mielke.cc)
List pgsql-hackers
On 2006-09-19, mark@mark.mielke.cc <mark@mark.mielke.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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