Index: dnstracer.c
--- dnstracer.c.orig	2008-02-09 13:47:37 +0100
+++ dnstracer.c	2008-02-10 10:08:43 +0100
@@ -689,7 +689,11 @@
 }
 
 void
+#ifdef NOIPV6
+dump_data(struct sockaddr_in *dest4, void *dest6, struct dnssession *session)
+#else
 dump_data(struct sockaddr_in *dest4, struct sockaddr_in6 *dest6, struct dnssession *session)
+#endif
 {
     struct dnsrr *answerrr;
     struct dnsrr *authorityrr;
@@ -810,6 +814,7 @@
 	exit(1);
     }
 
+#if defined(AI_NUMERICHOST) && defined(EAI_NODATA)
     if (global_source_address != NULL) {
 	struct addrinfo hints, *src_res;
 	int error;
@@ -836,6 +841,7 @@
 	    exit(1);
 	}
     }
+#endif
 
     return s;
 }
@@ -1123,6 +1129,25 @@
 
 /*****************************************************************************/
 
+static char *my_strcasestr(const char *s, const char *find)
+{
+    char c, sc;
+    size_t len;
+
+    if ((c = *find++) != 0) {
+        c = tolower((unsigned char)c);
+        len = strlen(find);
+        do {
+            do {
+                if ((sc = *s++) == 0)
+                    return (NULL);
+            } while ((char)tolower((unsigned char)sc) != c);
+        } while (strncasecmp(s, find, len) != 0);
+        s--;
+    }
+    return ((char *)s);
+}
+
 //
 // The core of this program
 //
@@ -1198,7 +1223,11 @@
     // don't have to worry about packets received from previous sessions.
     //
     session = (struct dnssession *)calloc(1, sizeof(struct dnssession));
+#ifdef NOIPV6
+    session->socket = create_socket(AF_INET);
+#else
     session->socket = create_socket(ipv6 ? AF_INET6 : AF_INET);
+#endif
     session->ipv6 = ipv6;
     session->server = strdup(server_ip);
     session->host = strdup(host);
@@ -1377,8 +1406,12 @@
 		    struct hostent *h;
 		    char **addr_list = NULL;
 
+#ifndef NOIPV6
 		    h = gethostbyname2(nextserver_name,
 			    ip == 0 ? AF_INET : AF_INET6);
+#else
+                    h = gethostbyname(nextserver_name);
+#endif
 		    if (h == NULL) continue;
 
 		    //