Fix WiFiServer IPv4 in IPv6

Author: s-hadinger

libraries/WiFi/src/WiFiServer.cpp

@@ -82,16 +82,16 @@ void WiFiServer::begin(uint16_t port, int enable){
     return;
   setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int));
   server.sin6_family = AF_INET6;
+  memset(server.sin6_addr.s6_addr, 0x0, 16);
   if (_addr.type() == IPv4) {
     // log_e("---------------- IPv4");
-    memcpy(server.sin6_addr.s6_addr+11, (uint8_t*)&_addr[0], 4);
+    memcpy(server.sin6_addr.s6_addr+12, (uint8_t*)&_addr[0], 4);
     server.sin6_addr.s6_addr[10] = 0xFF;
     server.sin6_addr.s6_addr[11] = 0xFF;
   } else {
     // log_e("---------------- IPv6");
     memcpy(server.sin6_addr.s6_addr, (uint8_t*)&_addr[0], 16);
   }
-  memset(server.sin6_addr.s6_addr, 0x0, 16);
   server.sin6_port = htons(_port);
   if(bind(sockfd, (struct sockaddr *)&server, sizeof(server)) < 0)
     return;