+ unsigned char buf[sizeof(struct in6_addr)];
+ int servername = 0;
+
+ if (avoid_dns) {
+ /*
+ * Determine if this is a server name, or an IP address.
+ * If it is an IP address, do the DNS lookup otherwise
+ * skip the DNS lookup.
+ */
+ servername = 0;
+ if (strchr(name, '.') && inet_pton(AF_INET, name, buf) == 1)
+ servername = 1; /* IPv4 */
+ else if (strchr(name, ':') && inet_pton(AF_INET6, name, buf) == 1)
+ servername = 1; /* or IPv6 */
+
+ if (servername) {
+ return strdup(name);
+ }
+ }