File 1354-kernel-Allow-resetting-of-inet_db-res_option-domain.patch of Package erlang

From 341e0d111360a93c8bc1cbad2d4eb962a59495aa Mon Sep 17 00:00:00 2001
From: Lukas Larsson <lukas@erlang.org>
Date: Tue, 21 Dec 2021 17:09:26 +0100
Subject: [PATCH 10/12] kernel: Allow resetting of inet_db:res_option domain

---
 lib/kernel/src/inet_db.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/kernel/src/inet_db.erl b/lib/kernel/src/inet_db.erl
index 01912fdb57..5416ba879d 100644
--- a/lib/kernel/src/inet_db.erl
+++ b/lib/kernel/src/inet_db.erl
@@ -498,7 +498,7 @@ res_check_option(nameservers, NSs) ->
 res_check_option(alt_nameservers, NSs) ->
     res_check_list(NSs, fun res_check_ns/1);
 res_check_option(domain, Dom) ->
-    inet_parse:visible_string(Dom);
+    Dom =:= "" orelse inet_parse:visible_string(Dom);
 res_check_option(lookup, Methods) ->
     try lists_subtract(Methods, valid_lookup()) of
 	[] -> true;
-- 
2.31.1