From owner-freebsd-questions@FreeBSD.ORG Wed Mar 3 09:56:21 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C632916A4DA for ; Wed, 3 Mar 2004 09:56:21 -0800 (PST) Received: from dc.cis.okstate.edu (dc.cis.okstate.edu [139.78.100.219]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8017143D3F for ; Wed, 3 Mar 2004 09:56:21 -0800 (PST) (envelope-from martin@dc.cis.okstate.edu) Received: from dc.cis.okstate.edu (localhost.cis.okstate.edu [127.0.0.1]) by dc.cis.okstate.edu (8.12.6/8.12.6) with ESMTP id i23HuKB7052724 for ; Wed, 3 Mar 2004 11:56:21 -0600 (CST) (envelope-from martin@dc.cis.okstate.edu) Message-Id: <200403031756.i23HuKB7052724@dc.cis.okstate.edu> To: freebsd-questions@freebsd.org Date: Wed, 03 Mar 2004 11:56:20 -0600 From: Martin McCormick Subject: Can Not ping Hosts by name when Underscores are Present. X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Mar 2004 17:56:21 -0000 Does the ping utility do some sort of name checking when one wants to ping a particular host by name? A person with an account on a FreeBSD system demonstrated to me that one could successfully look up a given host using nslookup but if you pinged that host by name as in ping host_name.domain, one got an immediate complaint from the ping utility like: ping: cannot resolve cl_mail1.mydomain: Unknown server error I pinged every single host in a range for which host or nslookups work and every single name with the _ failed in this manner. All other names either show an ICMP reply or nobody answering, in other words, perfectly normal behavior. Martin McCormick WB5AGZ Stillwater, OK OSU Information Technology Division Network Operations Group