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--- linux_wiki:kernel-based_virtual_machine_kvm [2015/03/09 22:22]
billdozor
+++ linux_wiki:kernel-based_virtual_machine_kvm [2019/05/25 23:50] (current)
@@ Line 6: / Line 6: @@
 **Checklist**
-  * Some Red Hat based distro is already installed. (CentOS, Scientific, RHEL, etc)
+  * Distro(s): Enterprise Linux 6
-  * This page was written using CentOS 6.6 with GNOME desktop (headless KVM is on the to do list!)
+  * Other: This page was written using CentOS 6.6 with GNOME desktop (headless KVM is on the to do list!)
   * 2015-02-13: These are rough notes and in progress as I learn KVM.
 ----
-===== Installation =====
+====== Installation ======
 ==== Install: Required Virtualization Packages (CLI) ====
@@ Line 50: / Line 50: @@
 ----
-===== Verify Installation and Start Services =====
+====== Verify Installation and Start Services ======
   * Ensure that the KVM kernel module is loaded
@@ Line 86: / Line 86: @@
 ----
-===== Setup Networking =====
+====== Setup Networking ======
 By default, VMs will be on a private network with no access to the outside world unless they use a physical host network interface as a bridge.
@@ Line 168: / Line 168: @@
 ----
-===== SELinux =====
+====== SELinux ======
 If SELinux is on and in Enforcing mode, there is additional configuration if you change the default directory for VM images.
@@ Line 205: / Line 205: @@
 ----
-===== Creating VMs =====
+====== Creating VMs ======
 VMs can be installed via a command line tool (virt-install) or a GUI (virt-manager).
@@ Line 297: / Line 297: @@
     * Step 5 =>
       * Ready to install: Confirm settings, set advanced options such as Host network device.
+----
+====== Disabling virbr0 NAT Interface ======
+On some desktop installations, a NAT interface "virbr0" is auto created.
+To disable this interface:
+  * View the interface<code bash>virsh net-list</code>
+  * Turn off the interface<code bash>virsh net-destroy default</code>
+  * Disable auto start on the interface<code bash>virsh net-autostart default –disable</code>
+  * Verify State is "inactive" and Autostart is "no", then ensure virbr0 is not in the interface list<code bash>virsh net-list --all
+ip addr show</code>
+  * Restart the network service
+    * EL6<code bash>service network restart</code>
+    * EL7<code bash>systemctl restart network</code>
+----