Add IPv6 disable

roles/rear_backup/tasks/main.yml

@@ -10,6 +10,19 @@
       - rear
     state: present
 
+- name: Toggle IPv6 off
+  ansible.builtin.shell:
+    cmd: "echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6"
+  changed_when: false
+
+- name: Disable IPv6 for future reboots
+  ansible.builtin.lineinfile:
+    path: /etc/sysctl.conf
+    line: "net.ipv6.conf.all.disable_ipv6 = 1"
+    state: present
+  when:
+    - rear_ipv6_disable_on_boot | default(false) | bool
+
 - name: Check and define NFS server for backup
   ansible.builtin.include_role:
     name: rhc.rear.nfs_server_define