--- a/net/server_event.lua	Tue Apr 10 22:43:13 2018 +0200
+++ b/net/server_event.lua	Tue Apr 10 20:41:03 2018 +0100
@@ -774,7 +774,9 @@
 local function setquitting(yes)
 	if yes then
 		-- Quit now
-		closeallservers();
+		if yes ~= "once" then
+			closeallservers();
+		end
 		base:loopexit();
 	end
 end