<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/4.6.6"> </HEAD> <BODY TEXT="#000000" BGCOLOR="#ffffff"> Thanks again! Can you tell me the difference in setting things up that way as opposed to updating (in Ubuntu) /etc/network/interfaces and adding physical br(idge) interfaces? On my other test box, I setup networks the way you describe from <A HREF="https://help.ubuntu.com/community/KVM/Networking">https://help.ubuntu.com/community/KVM/Networking</A> -----Original Message----- From: Laine Stump <<A HREF="mailto:Laine%20Stump%20%3claine@laine.org%3e">laine@laine.org</A>> To: <A HREF="mailto:libvirt-users@redhat.com">libvirt-users@redhat.com</A> Cc: <A HREF="mailto:shorawitz@gmail.com">shorawitz@gmail.com</A> Subject: Re: [libvirt-users] Isolated networks && test lab Date: Thu, 27 Aug 2015 20:52:04 -0400 On 08/27/2015 08:25 PM, Spanky Horawitz wrote: <BLOCKQUOTE TYPE=CITE> Sorry, just realized there is a VMmanager app too (free version seem to only have support for Debian 7 though.) I am using the Virtual Machine Manager GUI (virt-manager.) </BLOCKQUOTE> virt-manager is what I'm talking about (don't know what you mean by "VMmanager"). Probably the dialogs have changed - mine is v1.2.1. 0.9.5 sounds a bit old, you should see if there is a backport of a newer version somewhere for whatever distro you're running. Alternately, it is dirt simple to create a new network that has no IP address associated with it. Just do this: 1) create a file with these contents: <network> <name>mynetname</name> </network> 2) "virsh net-define filename.xml" (where filename.xml is the file containing the above XML) 3) "virsh net-autostart mynetname; virsh net-start mynetname" (all these run as root) </BODY> </HTML>