Minor change to avoid an alert on Alpine with allowipv6

tasks/config_fail2ban.yml

@@ -20,6 +20,26 @@
     line: '[iI](?:llegal|nvalid) user <F-USER>.*?</F-USER> from <HOST>%(__suff)s$'
     state: present
 
+# There was an error message with the restart of fail2ban on Alpine systems without that change.
+# Also, it makes sure ipv6 is being analysed.
+# Added also this part to remove duplicates of either parts of the block
+- name: Remove duplicate [Definition] or allowipv6 = yes lines
+  lineinfile:
+    path: /etc/fail2ban/fail2ban.conf
+    regexp: '^\[Definition\]|^allowipv6 = yes$'
+    state: absent
+
+- name: Ensure [Definition] section with allowipv6 = yes is present with an extra empty line below [Thread]
+  blockinfile:
+    path: /etc/fail2ban/fail2ban.conf
+    block: |
+      [Definition]
+
+      allowipv6 = yes
+      
+    marker: "# {mark} ANSIBLE MANAGED BLOCK"
+    insertbefore: '^\[Thread\]'
+
 # Updating fail2ban to be able to work with the way our nftables work
 - name: Deploy custom nftables action for Fail2Ban
   template:
@@ -41,4 +61,4 @@
     name: "Update logpath and reload fail2ban at midnight"
     minute: "0"
     hour: "0"
-    job: 'sleep 5 && /usr/local/bin/current_date_logpath && {% if ansible_os_family == "Alpine" %}service fail2ban restart{% else %}systemctl reload fail2ban{% endif %}'
+    job: 'sleep 5 && /usr/local/bin/current_date_logpath && fail2ban-client reload > /dev/null'