From owner-freebsd-net Tue Jun 11 9:50:18 2002 Delivered-To: freebsd-net@freebsd.org Received: from flamingo.mail.pas.earthlink.net (flamingo.mail.pas.earthlink.net [207.217.120.232]) by hub.freebsd.org (Postfix) with ESMTP id 5A62637B40A for ; Tue, 11 Jun 2002 09:50:13 -0700 (PDT) Received: from user-112159e.dsl.mindspring.com ([66.32.149.46] helo=ipom.com) by flamingo.mail.pas.earthlink.net with esmtp (Exim 3.33 #2) id 17HoqK-0006uK-00; Tue, 11 Jun 2002 09:50:04 -0700 Message-ID: <3D062B0A.90803@ipom.com> Date: Tue, 11 Jun 2002 09:53:30 -0700 From: Phil Dibowitz Organization: Insanity Palace of Metallica User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.4.1) Gecko/20020508 Netscape6/6.2.3 X-Accept-Language: en-us MIME-Version: 1.0 To: Mike Silbersack Cc: Mikael Olsson , Jean-Yves Lefort , freebsd-net@freebsd.org, mss@ipom.com Subject: Re: Broken PMTUD in FreeBSD? References: <20020611112119.N23986-100000@patrocles.silby.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Mike Silbersack wrote: > (I'm redirecting this back to freebsd-net, as it doesn't seem appropriate > for bugtraq.) > > I did some quick investigation last night, and agree with Phil that this > is a bug. When the syncache was implemented, only a subset of the normal > tcp output code was copied over for the purpose of sending syn-acks. One > part of the code that was not moved over was the part that determines when > the DF and tos bits are set. Ahhh. Sounds like many of the bugs I've found in my own software. > I also agree with Mikael that this isn't an important issue, given that > syn-ack packets are quite tiny. Nonetheless, I will commit a fix in the > next few days. However, it's too late to MFC it in time for 4.6-release. It's certainly not a security-threatening issue... but, as you said, it is a bug. > Phil: In the future, please try a bit harder to notify someone if you > believe that a bug is serious enough for posting to bugtraq. freebsd-net > is a relatively busy list, and things do get missed. Certainly. I appologize if I caused the FreeBSD developers any grief over my post. I'm not a FreeBSD user myself and wasn't aware of the http://www.freebsd.org/send-pr.html page until yesterday. I did submit a bug report there yesterday, which got assigned an ID of kern/39141, so when you commit the fix, you can update/close that case as well. Thanks again for your quick response. Phil Dibowitz (on Behalf of myself and Richard van den Berg) -- Insanity Palace of Metallica http://www.ipom.com webmaster@ipom.com -- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message