diff --git a/src/wormhole/server/cli.py b/src/wormhole/server/cli.py
index 3377af3..b86984f 100644
--- a/src/wormhole/server/cli.py
+++ b/src/wormhole/server/cli.py
@@ -98,9 +98,13 @@ def start(cfg, signal_error, no_daemon, blur_usage, advertise_version,
     "--signal-error", is_flag=True,
     help="force all clients to fail with a message",
 )
+@click.option(
+    "--disallow-list", is_flag=True,
+    help="never send list of allocated nameplates",
+)
 @click.pass_obj
 def restart(cfg, signal_error, no_daemon, blur_usage, advertise_version,
-            transit, rendezvous):
+            transit, rendezvous, disallow_list):
     """
     Re-start a relay server
     """
@@ -111,6 +115,7 @@ def restart(cfg, signal_error, no_daemon, blur_usage, advertise_version,
     cfg.transit = str(transit)
     cfg.rendezvous = str(rendezvous)
     cfg.signal_error = signal_error
+    cfg.allow_list = not disallow_list
 
     restart_server(cfg)