From owner-freebsd-net Mon Mar 17 19:54:48 2003 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C1A4C37B401; Mon, 17 Mar 2003 19:54:46 -0800 (PST) Received: from sccrmhc01.attbi.com (sccrmhc01.attbi.com [204.127.202.61]) by mx1.FreeBSD.org (Postfix) with ESMTP id 15D5B43FA3; Mon, 17 Mar 2003 19:54:46 -0800 (PST) (envelope-from DougB@freebsd.org) Received: from 12-234-22-23.client.attbi.com ([12.234.22.23]) by sccrmhc01.attbi.com (sccrmhc01) with SMTP id <20030318035445001007b8nle>; Tue, 18 Mar 2003 03:54:45 +0000 Date: Mon, 17 Mar 2003 19:54:44 -0800 (PST) From: Doug Barton To: Paolo M Cc: questions@freebsd.org, net@freebsd.org Subject: Re: BIND stange behavior In-Reply-To: <20030306215023.64687.qmail@web14803.mail.yahoo.com> Message-ID: <20030317193338.N15437@mbbg.pbec.lnubb.pbz> References: <20030306215023.64687.qmail@web14803.mail.yahoo.com> Organization: http://www.FreeBSD.org/ X-message-flag: Outlook -- Not just for spreading viruses anymore! MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII 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 On Thu, 6 Mar 2003, Paolo M wrote: > Hi Everybody, > > I am using a FreeBSD 4.7p7 box as the gateway to the > Internet in my home. > > I saw a very starnge behavior accessing mail.yahoo.com > from a connected Apple MacOS (but also from any other > PC), the first attempt to resolve the names replies an > error. If I repeat the request everything is fine. If > I wait some minutes all the sequence repeats... Are you blocking TCP for your name server by chance, or are you behind a PIX firewall? The answer for mail.yahoo.com is sometimes larger than a UDP packet can handle, so your resolver is either retrying with TCP, and/or it's negotiating a UDP packet size larger than PIX firewalls can understand. Doug -- This .signature sanitized for your protection To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message