WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

RE: [Xen-devel] [PATCH] example and default IP addresses

To: "Daniel P. Berrange" <berrange@xxxxxxxxxx>, "Ian Jackson" <Ian.Jackson@xxxxxxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH] example and default IP addresses
From: "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx>
Date: Thu, 17 Jan 2008 20:27:01 -0700
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Thu, 17 Jan 2008 19:28:58 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <20080117160346.GF21549@xxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Organization: Oracle Corporation
Reply-to: "dan.magenheimer@xxxxxxxxxx" <dan.magenheimer@xxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AchZgftgDkjSeStOT/mdDPvCBnhdBA==
> On Thu, Jan 17, 2008 at 03:35:02PM +0000, Ian Jackson wrote:
> > Dan Magenheimer writes ("RE: [Xen-devel] [PATCH] example 
> and default IP addresses"):
> > > In the patch to network-nat, I see that you are replacing 
> the 10.0.0.0/16
> > > usage with 192.0.2.0/24.  Actually, vif-nat has a dependency on it
> > > being 10.0.0.0/8(!), at least if more than 256 domains 
> are launched (not
> > > necessarily simultaneously, just sequentially created and 
> destroyed).
> > > In vif-nat ip_from_dom, IP's are created as 10.x.y.z for 
> vifw.z, where
> > > x*256+y==w.
> >
> > Firstly, I think it's important to note that network-nat and vif-nat
> > are pretty ropey.  Anyone who is using them will almost 
> certainly have
> > had to adjust them to local conditions anyway.  For example, these
> > scripts attempt to find and edit your local dhcp server 
> configuration
> > file !
> 
> FYI, for anyone using libvirt we recommend only using network-bridge
> and vif-bridge. libvirt then provides a 'virtual network' capability
> which allows you to define multiple local networks either completely
> isolated from the physical network, or connected via NAT. 
> This effectively
> provides same functionality as vif-nat/network-nat, but 
> without requiring
> the admin to modify shell scripts.

Hi Dan --

Does this handle DHCP as well?  If so, can you provide a pointer to more
information?

Thanks,
Dan

P.S. With the patch I posted yesterday, the admin doesn't have to modify
shell scripts for vif-nat and network-nat though admittedly the scripts
modify them directly which is probably OK if dom0 is not otherwise used
as a dhcp server.


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel