diff --git a/unix/kasmvnc_defaults.yaml b/unix/kasmvnc_defaults.yaml
index aefc451..7ea0f84 100644
--- a/unix/kasmvnc_defaults.yaml
+++ b/unix/kasmvnc_defaults.yaml
@@ -16,7 +16,7 @@ network:
   use_ipv4: true
   use_ipv6: true
   udp:
-    public_ip: auto
+    public_ip: 127.0.0.1
     port: auto
     payload_size: auto
     stun_server: auto