From 66afda488bae1441ee65b1985811dc7d4dc8c37e Mon Sep 17 00:00:00 2001
From: vyzo <vyzo@hackzen.org>
Date: Wed, 14 Apr 2021 19:03:59 +0300
Subject: [PATCH] allow overriding implicit defaults with the default resolver

License: MIT
Signed-off-by: vyzo <vyzo@hackzen.org>
---
 core/node/dns.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/core/node/dns.go b/core/node/dns.go
index 39b870e704e..408f08a4c1c 100644
--- a/core/node/dns.go
+++ b/core/node/dns.go
@@ -36,6 +36,12 @@ func DNSResolver(cfg *config.Config) (*madns.Resolver, error) {
 			return nil, fmt.Errorf("invalid domain %s; must be FQDN", domain)
 		}
 
+		domains[domain] = struct{}{}
+		if url == "" {
+			// allow overriding of implicit defaults with the default resolver
+			continue
+		}
+
 		rslv, ok := rslvrs[url]
 		if !ok {
 			rslv, err = newResolver(url)
@@ -50,8 +56,6 @@ func DNSResolver(cfg *config.Config) (*madns.Resolver, error) {
 		} else {
 			opts = append(opts, madns.WithDefaultResolver(rslv))
 		}
-
-		domains[domain] = struct{}{}
 	}
 
 	// fill in defaults if not overriden by the user