Mac OS X Jaguar (developer preview) seems to have a working getaddrinfo().
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index 477dc31..3b194b3 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -219,10 +219,15 @@
determine the bug just by checking for __APPLE__. If this bug
gets ever fixed, perhaps checking for sys/version.h would be
appropriate, which is 10/0 on the system with the bug. */
+#ifndef HAVE_GETNAMEINFO
+/* This bug seems to be fixed in Jaguar. Ths easiest way I could
+ Find to check for Jaguar is that it has getnameinfo(), which
+ older releases don't have */
#undef HAVE_GETADDRINFO
/* avoid clashes with the C library definition of the symbol. */
#define getaddrinfo fake_getaddrinfo
#endif
+#endif
/* I know this is a bad practice, but it is the easiest... */
#if !defined(HAVE_GETADDRINFO)