--- quagga-0.99.1/zebra/ipforward_sysctl.c	2005-11-01 09:53:36.000000000 +0100
+++ quagga-0.99.1-2614/zebra/ipforward_sysctl.c	2005-11-01 09:55:09.000000000 +0100
@@ -30,6 +30,15 @@
 
 #define MIB_SIZ 4
 
+/* Fix for recent (2.6.14) kernel headers */
+#ifndef IPCTL_FORWARDING
+#define IPCTL_FORWARDING	NET_IPV4_FORWARD
+#endif
+
+#ifndef IP6CTL_FORWARDING
+#define IP6CTL_FORWARDING	NET_IPV6_FORWARDING
+#endif
+
 extern struct zebra_privs_t zserv_privs;
 
 /* IPv4 forwarding control MIB. */