diff --git a/roles/radvd/templates/radvd.conf.j2 b/roles/radvd/templates/radvd.conf.j2
index 94720f5..dc5f1a2 100644
--- a/roles/radvd/templates/radvd.conf.j2
+++ b/roles/radvd/templates/radvd.conf.j2
@@ -39,7 +39,7 @@ interface ens20 {
     MaxRtrAdvInterval 30;
 
     AdvRASrcAddress {
-        fe80::1;
+        fe80::1; # link-local virtual IP used with keepalived
     };
 
     prefix {{ ipv6_base_prefix }}:{{ subnet_ids.users_wired }}::/64  {