Allow to receive IPv6 address. #1368

src/udprelay.c

@@ -460,9 +460,12 @@ create_server_socket(const char *host, const char *port)
             ERROR("[udp] setsockopt IP_TRANSPARENT");
             exit(EXIT_FAILURE);
         }
-        if (setsockopt(server_sock, IPPROTO_IP, IP_RECVORIGDSTADDR, &opt, sizeof(opt))) {
+        if (setsockopt(server_sock, SOL_IP, IP_RECVORIGDSTADDR, &opt, sizeof(opt))) {
             FATAL("[udp] setsockopt IP_RECVORIGDSTADDR");
         }
+        if (setsockopt(server_sock, SOL_IPV6, IPV6_RECVORIGDSTADDR, &opt, sizeof(opt))) {
+            FATAL("[udp] setsockopt IPV6_RECVORIGDSTADDR");
+        }
 #endif
 
         s = bind(server_sock, rp->ai_addr, rp->ai_addrlen);