diff --git a/README.md b/README.md
index 62b24ef..52c55a8 100644
--- a/README.md
+++ b/README.md
@@ -1532,6 +1532,23 @@ The box is a tarball containing:
 
 ## Create Box
 
+If creating a box from a modified vagrant-libvirt machine, ensure that
+you have set the `config.ssh.insert_key = false` in the original Vagrantfile
+as otherwise Vagrant will replace the default connection key-pair that is
+required on first boot with one specific to the machine and prevent
+the default key from working on the exported result.
+```ruby
+Vagrant.configure("2") do |config|
+  # this setting is only recommended if planning to export the
+  # resulting machine
+  config.ssh.insert_key = false
+
+  config.vm.define :test_vm do |test_vm|
+    test_vm.vm.box = "fedora/32-cloud-base"
+  end
+end
+```
+
 To create a vagrant-libvirt box from a qcow2 image, run `create_box.sh`
 (located in the tools directory):
 
diff --git a/tools/create_box.sh b/tools/create_box.sh
index 201d1d4..6139065 100755
--- a/tools/create_box.sh
+++ b/tools/create_box.sh
@@ -11,6 +11,10 @@ usage() {
     echo "Usage: ${0} IMAGE [BOX] [Vagrantfile.add]"
     echo
     echo "Package a qcow2 image into a vagrant-libvirt reusable box"
+    echo ""
+    echo "If packaging from a Vagrant machine ensure 'config.ssh.insert_key = false' was "
+    echo "set in the original Vagrantfile to avoid removal of the default ssh key, "
+    echo "otherwise vagrant will not be able to connect to machines created from this box"
 }
 
 # Print the image's backing file