From owner-freebsd-questions Thu Apr 4 14:09:20 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id OAA07599 for questions-outgoing; Thu, 4 Apr 1996 14:09:20 -0800 (PST) Received: from rip.ops.neosoft.com (rip.ops.NeoSoft.COM [206.109.4.20]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id OAA07573 for ; Thu, 4 Apr 1996 14:09:10 -0800 (PST) Received: (from awsmith@localhost) by rip.ops.neosoft.com (8.6.12/8.6.12) id QAA18118; Thu, 4 Apr 1996 16:07:48 -0600 From: Andrew Smith Message-Id: <199604042207.QAA18118@rip.ops.neosoft.com> Subject: Classless DNS incompat? To: bind-users@vix.com Date: Thu, 4 Apr 1996 16:07:48 -0600 (CST) Cc: questions@freebsd.org X-Mailer: ELM [version 2.4 PL24 ME8a] Content-Type: text Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Perhaps not the best place for this question.... Nameserver: ns.neo.net (198.64.6.1/206.109.1.1) FreeBSD 2.1-STABLE BIND 4.9.3 BETA26 FTP Server: www.neosoft.com (206.109.1.6) FreeBSD 2.1-960102 I just started to change a couple of my in-addrs to the cidrd-classless-inaddr draft specs, but I have noticed that our FreeBSD WWW/FTP server running wu-ftpd 2.4 is refusing customers who are in the in-addr range due to a mismatch in the A record returned from gethostbyname() and the actual PTR pointed to by the CNAME from gethostbyaddr(). For example, monster.t1.com resolves to 206.109.155.18, but 206.109.155.18 resolves to a CNAME 206.109.155.0.18, which then resolves to monster.t1.com. The resolver seems to not like this, returns an error, and wu-ftpd denies access. Questions: Is this a bug in the FreeBSD resolver? Do most O/S's resolvers function like this? Am I implimenting the draft method incorrectly to get responses like this? Does this bode ill for common use of this draft practice? Is this a known problem that many others are experiencing? --------------------------------------------------------------------------- Andrew Smith ** awsmith@neosoft.com ** Network Operations ** (713) 968-5800 ** "The best way to predict the future is to invent it" - Alan Kay ** ** http://www.neosoft.com/neosoft/staff/andrew ** ---------------------------------------------------------------------------