Received: from localhost (unknown [200.46.204.191]) by postgresql.org (Postfix) with ESMTP id C76442E333C for ; Mon, 14 Jan 2008 07:19:41 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.191]) (amavisd-maia, port 10024) with ESMTP id 68795-02 for ; Mon, 14 Jan 2008 07:19:38 -0400 (AST) Received: from vms042pub.verizon.net (vms042pub.verizon.net [206.46.252.42]) by postgresql.org (Postfix) with ESMTP id DE3DE2E032C for ; Mon, 14 Jan 2008 07:19:38 -0400 (AST) Received: from osgiliath.mathom.us ([71.178.47.70]) by vms042.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JUM00NN2SSF1BN2@vms042.mailsrvcs.net> for pgsql-performance@postgresql.org; Mon, 14 Jan 2008 05:19:27 -0600 (CST) Received: from localhost (localhost [127.0.0.1]) by osgiliath.mathom.us (Postfix) with ESMTP id 6B0BF1F8B1 for ; Mon, 14 Jan 2008 06:19:26 -0500 (EST) Received: from osgiliath.mathom.us ([127.0.0.1]) by localhost (osgiliath.home.mathom.us [127.0.0.1]) (amavisd-new, port 10024) with LMTP id UZgns5ufFNJQ for ; Mon, 14 Jan 2008 06:19:25 -0500 (EST) Received: by osgiliath.mathom.us (Postfix, from userid 1000) id 050D41F80E; Mon, 14 Jan 2008 06:19:24 -0500 (EST) Date: Mon, 14 Jan 2008 06:19:24 -0500 From: Michael Stone Subject: Re: Best way to index IP data? In-reply-to: <827iicizg7.fsf@mid.bfk.de> To: pgsql-performance@postgresql.org Mail-followup-to: pgsql-performance@postgresql.org Message-id: <20080114111921.GE5294@mathom.us> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii; format=flowed Content-disposition: inline X-Virus-Scanned: Debian amavisd-new at mathom.us X-Pgp-Fingerprint: 53 FF 38 00 E7 DD 0A 9C 84 52 84 C5 EE DF 7C 88 References: <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> User-Agent: Mutt/1.5.13 (2006-08-11) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200801/112 X-Sequence-Number: 28351 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