From owner-freebsd-hackers Fri Jan 4 15: 2:20 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from whizzo.transsys.com (whizzo.TransSys.COM [144.202.42.10]) by hub.freebsd.org (Postfix) with ESMTP id 91AA437B41B for ; Fri, 4 Jan 2002 15:02:16 -0800 (PST) Received: from whizzo.transsys.com (#6@localhost.transsys.com [127.0.0.1]) by whizzo.transsys.com (8.11.6/8.11.6) with ESMTP id g04N2A789953; Fri, 4 Jan 2002 18:02:10 -0500 (EST) (envelope-from louie@whizzo.transsys.com) Message-Id: <200201042302.g04N2A789953@whizzo.transsys.com> X-Mailer: exmh version 2.5 07/13/2001 with nmh-1.0.4 To: Guido van Rooij Cc: Terry Lambert , William Carrel , freebsd-hackers@FreeBSD.ORG X-Image-URL: http://www.transsys.com/louie/images/louie-mail.jpg From: "Louis A. Mamakos" Subject: Re: path_mtu_discovery References: <26E71536-013D-11D6-8ED3-003065D5E9A4@infospace.com> <3C36149B.B9C02DCF@mindspring.com> <20020104223235.GA64301@gvr.gvr.org> In-reply-to: Your message of "Fri, 04 Jan 2002 23:32:35 +0100." <20020104223235.GA64301@gvr.gvr.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 04 Jan 2002 18:02:10 -0500 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG One possibility is that the code in icmp_input() processing the PMTU discovery-induced ICMP message could verify that the returned header in fact is associated with a connection on the host and maybe even has sane sequence numbers (for TCP segments). This would make it more difficult to just spray these packets at host and drop the MTU on routes. louie To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message