diff --git a/pathvector.yml b/pathvector.yml
index 43d85ea..e784a83 100644
--- a/pathvector.yml
+++ b/pathvector.yml
@@ -10,6 +10,7 @@ peeringdb-api-key: "XI1hPhPz.p7jIzBFNECHsPIHKGPGzoiGRTMu85ZvW" # https://www.pee
 peeringdb-url: https://peeringdb.com/api/
 merge-paths: true
 source4: "10.128.73.16"
+#source6: "" Add to not leak local IPv6 Address on public peers.
 prefixes:
   - "153.76.4.0/24"
   - "23.158.228.0/24"