From owner-freebsd-net@FreeBSD.ORG Sat Jun 6 06:25:29 2009 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D0C2C1065673; Sat, 6 Jun 2009 06:25:29 +0000 (UTC) (envelope-from joel@FreeBSD.org) Received: from mail.vnode.se (mail.vnode.se [62.119.52.82]) by mx1.freebsd.org (Postfix) with ESMTP id 87FAE8FC13; Sat, 6 Jun 2009 06:25:29 +0000 (UTC) (envelope-from joel@FreeBSD.org) Received: from iMac.local (pgw.vnode.se [77.110.37.134]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.vnode.se (Postfix) with ESMTPSA id 0BDB9E9F42B; Sat, 6 Jun 2009 08:09:16 +0200 (CEST) Message-ID: <4A2A080C.1040402@FreeBSD.org> Date: Sat, 06 Jun 2009 08:09:16 +0200 From: Joel Dahl User-Agent: Thunderbird 2.0.0.21 (Macintosh/20090302) MIME-Version: 1.0 To: Doug Barton References: <200906051424.n55EOIrM012619@post.behrens.de> <4A297BB4.80002@FreeBSD.org> In-Reply-To: <4A297BB4.80002@FreeBSD.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Frank Behrens , freebsd-net@freebsd.org, roberto@freebsd.org, Edwin Groothuis Subject: Re: NTP - default /etc/ntp.conf X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Jun 2009 06:25:30 -0000 Doug Barton skrev: > Frank Behrens wrote: >> Edwin Groothuis wrote on 5 Jun 2009 22:44: >>> After pondering at conf/58595, I came with this text. >>> >>> The ntpd is not enabled by default, so the fact that the servers >>> are commented out should not be an issue. >>> ... >>> +# server pool.ntp.org >>> +# server pool.ntp.org >>> +# server pool.ntp.org >> Isn't it better to use different entries? >> server 0.pool.ntp.org >> server 1.pool.ntp.org >> server 2.pool.ntp.org >> >> To be sure that the IP addresses are different. >> See >> http://www.pool.ntp.org/en/use.html > > I agree with this suggestion, as well as the others about adding the > default restrictions and the fallback local clock. Bruce is right > about the ntp.drift file name, however we already have existing stuff > that mentions ntpd.drift, and since it's specified on the command line > in rc.conf the problems of what it says in the code are bypassed. > > OTOH, we should use ntp.conf (no d) since that is what is referenced > in the man page for ntpd, and the man page for the conf file is > ntp.conf. (It's currently wrong in the Makefile in your patch.) > > One more thing, it was said some time ago that due to a quirk in how > ntpd works on our system that adding the following to the server line > makes it work more efficiently: > > server foo iburst maxpoll 9 I've read the same somewhere and I've been using "iburst maxpoll 9" for a long time. If this is correct, I think it should go into the default ntp.conf. -- Joel