Update receiver-udp.c

04-affichage-adresse/receiver-udp.c

@@ -38,6 +38,7 @@ int main(int argc, char *argv[1]) {
     hints.ai_family = AF_INET;
     hints.ai_socktype = SOCK_DGRAM;
     hints.ai_protocol = IPPROTO_UDP;
+    hints.ai_flags = AI_NUMERICHOST;
     error = getaddrinfo(ip_new, argv[2], &hints, &res);
 
     if (error != 0) {