diff --git a/roles/prereq/tasks/main.yml b/roles/prereq/tasks/main.yml
index 97617cf8fb7405d6157841961ca4e4728fc0873f..e857729b88dcb4c2b387c80a88a0fecd389dcc2d 100644
--- a/roles/prereq/tasks/main.yml
+++ b/roles/prereq/tasks/main.yml
@@ -17,6 +17,7 @@
     value: "1"
     state: present
     reload: yes
+  when: ansible_all_ipv6_addresses
 
 - name: Add br_netfilter to /etc/modules-load.d/
   copy: