- if ((hp = gethostbyname (buffer)))
- strncpy (buffer, hp->h_name, sizeof(buffer));
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_flags = AI_CANONNAME;
+ hints.ai_family = PF_UNSPEC;
+ if (getaddrinfo(buffer, NULL, &hints, &res) == 0) {
+ strncpy(buffer, res->ai_canonname, sizeof(buffer) - 1);
+ freeaddrinfo(res);
+ }