diff --git a/ansible/files/bgp-backup.network b/ansible/files/bgp-backup.network
index f3b98cd..b659f11 100644
--- a/ansible/files/bgp-backup.network
+++ b/ansible/files/bgp-backup.network
@@ -4,6 +4,6 @@ Name=bgp-backup
 [Network]
 {% for host in groups['all'] -%}
 {%- if host != inventory_hostname -%}
-Address={{ hostvars[host]['bgp_ipv6'] }}
+Address={{ hostvars[host]['bgp_ipv6'] }}/128
 {% endif -%}
 {% endfor %}