diff --git a/doc/iodine-server.socket b/doc/iodine-server.socket
index d6c57b8..485181f 100644
--- a/doc/iodine-server.socket
+++ b/doc/iodine-server.socket
@@ -3,6 +3,8 @@ Description=Iodine socket
 
 [Socket]
 ListenDatagram=53
+ListenDatagram=0.0.0.0:53
+BindIPv6Only=ipv6-only
 
 [Install]
 WantedBy=sockets.target