From owner-freebsd-net@FreeBSD.ORG Thu Jan 17 12:49:57 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3B09A16A417 for ; Thu, 17 Jan 2008 12:49:57 +0000 (UTC) (envelope-from tom@tomjudge.com) Received: from s200aog17.obsmtp.com (s200aog17.obsmtp.com [207.126.144.131]) by mx1.freebsd.org (Postfix) with SMTP id 9370F13C447 for ; Thu, 17 Jan 2008 12:49:56 +0000 (UTC) (envelope-from tom@tomjudge.com) Received: from source ([217.206.187.80]) by eu1sys200aob017.postini.com ([207.126.147.11]) with SMTP; Thu, 17 Jan 2008 12:49:55 UTC Received: from bill.mintel.co.uk (bill.mintel.co.uk [10.0.0.89]) by rodney.mintel.co.uk (Postfix) with ESMTP id 6FF17181420 for ; Thu, 17 Jan 2008 12:49:55 +0000 (GMT) Message-ID: <478F4EF2.7060209@tomjudge.com> Date: Thu, 17 Jan 2008 12:49:54 +0000 From: Tom Judge User-Agent: Thunderbird 2.0.0.6 (X11/20071022) MIME-Version: 1.0 To: freebsd-net Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Tuning of IP_MAX_MEMBERSHIPS for IP Multicast Sockets 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, 17 Jan 2008 12:49:57 -0000 Hi, On RELENG_6_2 the max multicast memberships per socket (IP_MAX_MEMBERSHIPS) is hard coded in sys/netinet/in.h to 20. Would there be any problem with bumping this to say 40. The problem is our VPN routers running quagga (ospf) seem to be hitting this limit. I know the problem is fixed on 7+ but would there be any adverse side affects of bumping this value up? Thanks Tom