From owner-freebsd-questions Fri Aug 18 20:16:50 1995 Return-Path: questions-owner Received: (from majordom@localhost) by freefall.FreeBSD.org (8.6.11/8.6.6) id UAA09831 for questions-outgoing; Fri, 18 Aug 1995 20:16:50 -0700 Received: from central.picker.com (central.picker.com [144.54.31.2]) by freefall.FreeBSD.org (8.6.11/8.6.6) with SMTP id UAA09825 for ; Fri, 18 Aug 1995 20:16:48 -0700 Received: from ct.picker.com by central.picker.com with smtp (Smail3.1.28.1 #3) id m0sjeIT-0004rlC; Fri, 18 Aug 95 23:10 EDT Received: from elmer.ct.picker.com ([144.54.52.5]) by ct.picker.com (4.1/SMI-4.1) id AA27928; Fri, 18 Aug 95 23:09:55 EDT Received: by elmer.ct.picker.com (5.0/SMI-SVR4) id AA15248; Fri, 18 Aug 1995 23:07:18 +0500 From: rhh@ct.picker.com (Randall Hopper) Message-Id: <9508190307.AA15248@elmer.ct.picker.com> Subject: Strange DNS Query when "su" is run To: questions@freebsd.org Date: Fri, 18 Aug 1995 23:07:17 -0400 (EDT) Reply-To: rhh@ct.picker.com Organization: Picker International, CT Division X-Mailer: ELM [version 2.4 PL23] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 935 Sender: questions-owner@freebsd.org Precedence: bulk I have 2.0.5 set up with SLIP across a modem link. Whenever I "su" to root (or any user for that matter) on my FreeBSD box, FreeBSD issues a DNS query across my SLIP link for some reason. If I have turned off my modem and have neglected to kill slattach, su locks up when invoked and I can only suspend it. Also, kill won't get rid of this process. In trying to track the problem further, I kicked off tcpdump on the SLIP interface, and found out that DNS query is pretty strange...an A? query for "" with a few bytes left over at the end: 22:48:49.477448 144.54.60.10.1204 > 144.54.52.2.53: 2+ A? . (17) (ttl 62, id 32018) 4500 002d 7d12 0000 3e11 6f35 9036 3c0a 9036 3402 04b4 0035 0019 6757 0002 0100 0001 0000 0000 0000 0000 0100 0100 Does anybody understand this behavior? Thanks, Randall Hopper rhh@ct.picker.com