From mboxrd@z Thu Jan 1 00:00:00 1970 From: Whit Blauvelt Subject: Re: How do containers tie to multiple IP's on a NIC? Date: Wed, 7 Jul 2010 09:22:06 -0400 Message-ID: <20100707132206.GA16692@transpect.com> References: <20100704034023.GA29753@transpect.com> <4C30BC16.9090802@free.fr> <20100704191841.GA31425@transpect.com> <4C30E5CB.1080902@free.fr> <20100704230827.GA1066@transpect.com> <4C31AAEE.5010201@gmail.com> <20100705140750.GA3113@transpect.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: "Eric W. Biederman" Cc: containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: containers.vger.kernel.org On Wed, Jul 07, 2010 at 05:55:22AM -0700, Eric W. Biederman wrote: > paired veth devices are interesting because you can put one end of a > logical tunnel in each network namespace. > > macvlan devices are interesting because you can create assign multiple > mac addresses to a nic and have a different network device for each > mac address. These two statements could be section headers in a valuable article - or book chapter. The problem with the standard VM concep: it takes the metaphor of separate computers too literally. The potential for lessening the materials expense and environmental cost of producing so much hardware and the electricity to power it - is huge. Conversion to containers instead of VMs can be a major economic win. But only if the knowledge of how to do it becomes widespread. Whit