unresolved symbol

hi,
hab ipchains als modul compiliert und erhalte
folgenden fehler beim laden :

laden des modules ipchains über modprobe :
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol nf_register_hook_Rsmp_e8e8ee9d
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol nf_unregister_hook_Rsmp_38a5b3d3
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol nf_register_sockopt_Rsmp_5cb45079
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol icmp_send_Rsmp_cbbd7224
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol nf_unregister_sockopt_Rsmp_66468efd
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol inet_select_addr_Rsmp_974e89d4
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol ip_defrag_Rsmp_1007efb0
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol ip_route_input_Rsmp_6add3ea9
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol ip_route_output_key_Rsmp_dd52db47
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol sock_wfree_Rsmp_041ea5a6
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: unresolved symbol sk_free_Rsmp_07f00384
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: insmod /lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o failed
/lib/modules/2.4.0/kernel/net/ipv4/netfilter/ipchains.o: insmod ipchains failed

insmod sieht so ähnlich aus !

was hab ich vergessen ?

bin am verzweifeln :-(

-grüße
bernd