From owner-freebsd-net@FreeBSD.ORG Thu May 24 06:50:32 2012 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 26C23106564A for ; Thu, 24 May 2012 06:50:32 +0000 (UTC) (envelope-from luigi@onelab2.iet.unipi.it) Received: from onelab2.iet.unipi.it (onelab2.iet.unipi.it [131.114.59.238]) by mx1.freebsd.org (Postfix) with ESMTP id DAC388FC12 for ; Thu, 24 May 2012 06:50:31 +0000 (UTC) Received: by onelab2.iet.unipi.it (Postfix, from userid 275) id 01BC57300A; Thu, 24 May 2012 09:10:55 +0200 (CEST) Date: Thu, 24 May 2012 09:10:55 +0200 From: Luigi Rizzo To: net@freebsd.org Message-ID: <20120524071055.GA50710@onelab2.iet.unipi.it> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.3i Cc: Subject: use of non-contiguous masks in address lookups ? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 May 2012 06:50:32 -0000 Hi, every now and then the issue comes up on whether we still need to support non-contiguous masks in address lookups. I seem to remember someone (perhaps on this list) making a case for their presence, but forgot the details. So, does anyone know of a practical use of non contiguous masks ? cheers luigi