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From: Michael Stone <mstone+postgres@mathom.us>
To: pgsql-performance@postgresql.org
Subject: Re: Best way to index IP data?
Date: Mon, 14 Jan 2008 06:19:24 -0500
Message-ID: <20080114111921.GE5294@mathom.us> (raw)
In-Reply-To: <827iicizg7.fsf@mid.bfk.de>
References: <Pine.LNX.4.64.0801111025390.30762@localhost>
	<13179.1200064791@sss.pgh.pa.us>
	<20080111162747.GT5294@mathom.us>
	<24044.1200082058@sss.pgh.pa.us>
	<20080111212703.GU5294@mathom.us>
	<20080111213710.GD8260@alvh.no-ip.org>
	<20080111220235.GX5294@mathom.us>
	<20080111222403.GA7527@crankycanuck.ca>
	<1259C7B1-C948-4326-B827-849C64B61A16@blighty.com>
	<827iicizg7.fsf@mid.bfk.de>

On Mon, Jan 14, 2008 at 09:27:52AM +0100, Florian Weimer wrote:
>* Steve Atkins:
>> I don't think there's ambiguity about what an dotted-quad without a
>> netmask means, and hasn't been for a long time. Am I missing
>> something?
>
>Classful addressing is still part of many user interfaces, for
>instance Cisco's IOS.  It's not just that the CLI accepts it, it's
>also the standard[*] output format (that is, "192.0.2.0" instead of
>"192.0.2.0/24"; if no prefix length is given, the one based on the
>class is used).

Again, is this at all ambiguous *in the context of a host IP*? (IOW, if 
I say that I recieved an IP packet from 10.0.0.1, are you really going 
to ask me to clarify the netmask?)

Mike Stone



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