From accf1ad5128240bc4416d8319d4e89c3ffee7186 Mon Sep 17 00:00:00 2001
From: zfl9 <zfl9.com@gmail.com>
Date: Sun, 22 Sep 2019 11:05:24 +0800
Subject: add ipv6_v6only socket flag

---
 dns2tcp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dns2tcp.c b/dns2tcp.c
index 0c0cc40..11a2aec 100644
--- a/dns2tcp.c
+++ b/dns2tcp.c
@@ -170,7 +170,7 @@ int main(int argc, char *argv[]) {
     g_udp_server = &(uv_udp_t){0};
     uv_udp_init(g_evloop, g_udp_server);
 
-    int retval = uv_udp_bind(g_udp_server, (void *)&g_listen_skaddr, 0);
+    int retval = uv_udp_bind(g_udp_server, (void *)&g_listen_skaddr, (g_listen_skaddr.sin6_family == AF_INET) ? 0 : UV_UDP_IPV6ONLY);
     if (retval < 0) {
         LOGERR("[main] bind failed: (%d) %s", -retval, uv_strerror(retval));
         return -retval;
-- 
cgit v1.2.3