--- zebra/ipforward_sysctl.c 2010-06-20 23:40:45.000000000 +0200
+++ zebra/ipforward_sysctl.c 2010-06-20 23:41:37.000000000 +0200
@@ -31,6 +31,15 @@

 #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. */