http://code.google.com/p/spybye/issues/detail?id=1

--- spybye.c	2007-06-10 00:48:32.000000000 +0200
+++ spybye.c.oden	2008-05-14 10:46:57.000000000 +0200
@@ -576,6 +576,7 @@ void
 dns_free(struct dns_cache *entry)
 {
 	SPLAY_REMOVE(dns_tree, &root, entry);
+	free(entry->addresses);
 	free(entry->name);
 	free(entry);
 }