diff --git a/config/config.go b/config/config.go
index 02c691c0..da8fb828 100644
--- a/config/config.go
+++ b/config/config.go
@@ -817,12 +817,10 @@ func parseDNS(rawCfg *RawConfig, hosts *trie.DomainTrie[netip.Addr], rules []C.R
 		host, _, err := net.SplitHostPort(ns.Addr)
 		if err != nil || net.ParseIP(host) == nil {
 			u, err := url.Parse(ns.Addr)
-			if err == nil {
+			if err == nil && net.ParseIP(u.Host) == nil {
 				if ip, _, err := net.SplitHostPort(u.Host); err != nil || net.ParseIP(ip) == nil {
 					return nil, errors.New("default nameserver should be pure IP")
 				}
-			} else {
-				return nil, errors.New("default nameserver should be pure IP")
 			}
 		}
 	}