Add ndproxy to support neighbor discovery of VMs from the public internet.

ansible/roles/ndproxy/handlers/main.yaml

@@ -0,0 +1,14 @@
+# - name: restart foo freebsd
+#   when: 'os_flavor == "freebsd"'
+#   listen: restart foo
+#   service:
+#     name: foo
+#     state: restarted
+
+# - name: restart ssh linux
+#   when: 'os_flavor == "linux"'
+#   listen: restart foo
+#   systemd:
+#     state: restarted
+#     name: foo
+#     daemon_reload: yes