that iptables can compile
--- /dev/null
+--- linux/include/linux/netfilter_ipv4/ip_nat.h.orig 2005-03-21 16:18:40.000000000 -0700
++++ linux/include/linux/netfilter_ipv4/ip_nat.h 2005-03-21 16:23:54.000000000 -0700
+@@ -66,6 +66,15 @@
+ struct ip_conntrack_manip manip;
+ };
+
++/* For backwards compat: don't use in modern code. */
++struct ip_nat_multi_range_compat
++{
++ unsigned int rangesize; /* Must be 1. */
++
++ /* hangs off end. */
++ struct ip_nat_range range[1];
++};
++
+ #define ip_nat_multi_range ip_nat_multi_range_compat
+
+ #endif