Create ipv6_gfwlist_only.patch

diy/.packages/chinadns-ng/patches/ipv6_gfwlist_only.patch

@@ -0,0 +1,32 @@
+From 3a2bf634d9073094034ff10ffe81e501be62db05 Mon Sep 17 00:00:00 2001
+From: Yesterday17 <mmf@mmf.moe>
+Date: Thu, 7 Oct 2021 12:05:09 +0800
+Subject: [PATCH] make -N work for NO_MATCH and GFWLIST only
+
+---
+ chinadns.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/chinadns.c b/chinadns.c
+index 0d53af0..34ef185 100644
+--- a/chinadns.c
++++ b/chinadns.c
+@@ -345,7 +345,9 @@ static void handle_local_packet(void) {
+         LOGINF("[handle_local_packet] query [%s] from %s#%hu (%hu)", g_domain_name_buffer, g_ipaddrstring_buffer, source_port, g_current_unique_msgid);
+     }
+ 
+-    if (g_no_ipv6_query && qtype == DNS_RECORD_TYPE_AAAA) {
++    uint8_t dnlmatch_ret = (g_gfwlist_fname || g_chnlist_fname) ? dnl_ismatch(g_domain_name_buffer, g_gfwlist_first) : DNL_MRESULT_NOMATCH;
++
++    if (g_no_ipv6_query && dnlmatch_ret != DNL_MRESULT_CHNLIST && qtype == DNS_RECORD_TYPE_AAAA) {
+         IF_VERBOSE LOGINF("[handle_local_packet] reply [%s] without answer (by ipv6 filter)", g_domain_name_buffer);
+         dns_header_t *header = (dns_header_t *)g_socket_buffer;
+         header->qr = DNS_QR_REPLY;
+@@ -358,7 +360,6 @@ static void handle_local_packet(void) {
+     dns_header_t *dns_header = (dns_header_t *)g_socket_buffer;
+     uint16_t origin_msgid = dns_header->id;
+     dns_header->id = unique_msgid; /* replace with new msgid */
+-    uint8_t dnlmatch_ret = (g_gfwlist_fname || g_chnlist_fname) ? dnl_ismatch(g_domain_name_buffer, g_gfwlist_first) : DNL_MRESULT_NOMATCH;
+ 
+     for (int i = 0; i < SERVER_MAXCOUNT; ++i) {
+         if (g_remote_sockfds[i] < 0) continue;