diff --git a/xwords4/relay/xwrelay.conf_tmplate b/xwords4/relay/xwrelay.conf_tmplate
index 2b6862ecc..fce4469fd 100644
--- a/xwords4/relay/xwrelay.conf_tmplate
+++ b/xwords4/relay/xwrelay.conf_tmplate
@@ -28,8 +28,12 @@ DEVICE_PORTS=10998
 
 # Port for per-device UDP interface (experimental)
 UDP_PORT=10997
-# interface to listen on -- may get dup packets if not specified
-UDP_IFACE=eth0
+
+# interface to listen on -- may get dup packets if not specified. BUT:
+# at least on Linode specifying this leads to an socket that can't be
+# reached from localhost, e.g. by python scripts, and local tests pass
+# fine without it. So the dup packets thing may no longer apply.
+# UDP_IFACE=eth0
 
 # How long after we've read from an address before we assume it's
 # recycled.  Also sent to clients as a suggested ping interval