From fda363ea5a5ab59570f2ae09fc6b14d5c5a17366 Mon Sep 17 00:00:00 2001
From: Robert Bohne <robert.bohne@redhat.com>
Date: Tue, 27 Jul 2021 08:52:01 +0200
Subject: [PATCH] Added an IPv6 check

Playbook fails with propper error msg if IPv6 is enabled but not
available.
---
 ansible/roles/openshift-4-cluster/tasks/create-network.yml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/ansible/roles/openshift-4-cluster/tasks/create-network.yml b/ansible/roles/openshift-4-cluster/tasks/create-network.yml
index 00438fd3..4249e05a 100644
--- a/ansible/roles/openshift-4-cluster/tasks/create-network.yml
+++ b/ansible/roles/openshift-4-cluster/tasks/create-network.yml
@@ -4,6 +4,13 @@
 #     src: templates/network.xml.j2
 #     dest: network.xml
 
+- name: Check IPv6
+  fail:
+    msg: "IPv6 is enabled via ip_families but your Host system do not have a public IPv6 subnet configured."
+  when:
+    - "'IPv6' in ip_families"
+    - hostvars['localhost']['ansible_default_ipv6'] | length == 0
+
 - name: Build IPv6 subnet
   set_fact:
     vn_subnet_ipv6: "{{ hostvars['localhost']['ansible_default_ipv6']['address'].split(':')[:4] | join(':') | string}}:{{ '%x' % vn_subnet.split('.')[2] | int }}"