From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bifrost.lang.hm (mail.lang.hm [64.81.33.126]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by huchra.bufferbloat.net (Postfix) with ESMTPS id 454DD200A76 for ; Mon, 20 Aug 2012 13:48:36 -0700 (PDT) Received: from asgard.lang.hm (asgard.lang.hm [10.0.0.100]) by bifrost.lang.hm (8.13.4/8.13.4/Debian-3) with ESMTP id q7KKmY6a009947; Mon, 20 Aug 2012 13:48:34 -0700 Date: Mon, 20 Aug 2012 13:48:34 -0700 (PDT) From: david@lang.hm X-X-Sender: dlang@asgard.lang.hm To: George Lambert In-Reply-To: Message-ID: References: <502E064C.50305@etorok.net> <502E9609.5040800@etorok.net> <9246.1345321014@sandelman.ca> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII Cc: cerowrt-devel@lists.bufferbloat.net Subject: Re: [Cerowrt-devel] cerowrt 3.3.8-17: nice latency improvements, some issues with bind X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Aug 2012 20:48:36 -0000 On Mon, 20 Aug 2012, George Lambert wrote: > Check and set the time by syncing to NTP Servers - not user supplied times > if the network > is available. to see if they have set times > those set by NTP Server In theory you are right, in practice you are not. it's not uncommon for systems to point at a local set of timeservers (GPS based for example), sometimes things go wrong with those servers, and so people configure a local fallback (because they need the clocks on the systems to remain consistant for things like kerberos to keep working). This leads to a failure mode where if something goes wrong on that system, the time can get set via NTP to some time in the future. There needs to be a way to recover from such conditions. The recent problems that people had with leap seconds is an indication that even if you do use Internet NTP servers, sometimes things go wrong. David Lang