$NetBSD: patch-ae,v 1.1 2009/07/26 20:14:44 schmonz Exp $

--- include/libnet/libnet-headers.h.orig	2000-12-13 15:38:40.000000000 -0500
+++ include/libnet/libnet-headers.h
@@ -509,7 +509,7 @@ struct tcpoption
 };
 
 
-#if (__linux__)
+#if (__linux__) || defined(__APPLE__)
 /*
  *  Linux has a radically different IP options structure from BSD.
  */