Add troubleshooting docs for libvirt console issue.

docs/dev/libvirt-howto.md

@@ -286,6 +286,32 @@ kubectl get --all-namespaces pods
 ## Troubleshooting
 If following the above steps hasn't quite worked, please review this section for well known issues.
 
+### console doesn't come up
+In case of libvirt there is no wildcard dns resolution and console is depend on the route which is created by auth operator.
+To make it work we need to use the multi-stage installation and edit the `domain` for ingress.
+
+Following steps are required to have console operator up and working.
+```console
+// Add another domain entry in the openshift.conf which used by dnsmasq
+// Here `tt.testing` is the domain which I choose when running the installer.
+$ cat /etc/NetworkManager/dnsmasq.d/openshift.conf
+server=/tt.testing/192.168.126.1
+address=/.apps.tt.testing/192.168.126.51
+
+// Make sure you restart the NetworkManager after change in the openshift.conf
+$ sudo systemctl restart NetworkManager
+
+// Create the manifests
+$ openshift-install create manifests --dir myTestDir
+
+// Edit the cluster-ingress-02-config.yml file
+$ cat myTestDir/manifests/cluster-ingress-02-config.yml | grep domain
+domain: apps.tt.testing
+
+// Start the installer to create the cluster
+$ openshift-install create cluster
+```
+
 ### Install throws an `Unable to resolve address 'localhost'` error
 
 If you're seeing an error similar to