[eside-ghost] Compilar el kernel

[erZapito]

Buenas, ando recompilando el kernel y tengo parte de las iptables como
módulo, el tema es que al hacer un "modprobe iptable_nat" en dmesg me
sale lo siguiente:

nf_conntrack_ipv4: Unknown symbol __nf_ct_l4proto_find
nf_conntrack_ipv4: Unknown symbol nf_conntrack_find_get
nf_conntrack_ipv4: Unknown symbol nf_conntrack_l4proto_register
nf_conntrack_ipv4: Unknown symbol nf_conntrack_checksum
nf_conntrack_ipv4: Unknown symbol __nfa_fill
nf_conntrack_ipv4: Unknown symbol nf_ct_get_tuple
nf_conntrack_ipv4: Unknown symbol nf_conntrack_l4proto_udp4
nf_conntrack_ipv4: Unknown symbol nf_conntrack_l3proto_register
nf_conntrack_ipv4: Unknown symbol nf_conntrack_max
nf_conntrack_ipv4: Unknown symbol nf_ct_log_invalid
nf_conntrack_ipv4: Unknown symbol nf_ct_l3protos
nf_conntrack_ipv4: Unknown symbol need_conntrack
nf_conntrack_ipv4: Unknown symbol nf_conntrack_htable_size
nf_conntrack_ipv4: Unknown symbol nf_conntrack_expect_list
nf_conntrack_ipv4: Unknown symbol nf_conntrack_l4proto_unregister
nf_conntrack_ipv4: Unknown symbol per_cpu__nf_conntrack_stat
nf_conntrack_ipv4: Unknown symbol nf_conntrack_count
nf_conntrack_ipv4: Unknown symbol __nf_conntrack_confirm
nf_conntrack_ipv4: Unknown symbol nf_ct_invert_tuple
nf_conntrack_ipv4: Unknown symbol print_tuple
nf_conntrack_ipv4: Unknown symbol nf_conntrack_lock
nf_conntrack_ipv4: Unknown symbol nf_conntrack_l3proto_unregister
nf_conntrack_ipv4: Unknown symbol nf_conntrack_l4proto_tcp4
nf_conntrack_ipv4: Unknown symbol nf_conntrack_hash
nf_conntrack_ipv4: Unknown symbol __nf_ct_refresh_acct
nf_conntrack_ipv4: Unknown symbol nf_conntrack_l3proto_generic
nf_conntrack_ipv4: Unknown symbol nf_conntrack_in
nf_nat: Unknown symbol __nf_ct_l4proto_find
nf_nat: Unknown symbol nf_ct_invert_tuplepr
nf_nat: Unknown symbol nf_ct_l3proto_put
nf_nat: Unknown symbol __nfa_fill
nf_nat: Unknown symbol nf_conntrack_tcp_update
nf_nat: Unknown symbol nf_ct_get_tuple
nf_nat: Unknown symbol nf_conntrack_untracked
nf_nat: Unknown symbol nf_ct_l3proto_find_get
nf_nat: Unknown symbol nf_conntrack_tuple_taken
nf_nat: Unknown symbol nf_conntrack_htable_size
nf_nat: Unknown symbol nf_ct_iterate_cleanup
nf_nat: Unknown symbol nf_conntrack_alter_reply
nf_nat: Unknown symbol nf_conntrack_destroyed
iptable_nat: Unknown symbol nf_conntrack_untracked
iptable_nat: Unknown symbol nf_nat_packet
iptable_nat: Unknown symbol need_conntrack
iptable_nat: Unknown symbol nf_nat_setup_info
iptable_nat: Unknown symbol nf_nat_module_is_loaded
iptable_nat: Unknown symbol nf_nat_seq_adjust
iptable_nat: Unknown symbol nf_nat_icmp_reply_translation
iptable_nat: Unknown symbol nf_conntrack_unregister_cache
iptable_nat: Unknown symbol nf_conntrack_register_cache

lo que no entiendo del tema es que tanto "nf_conntrack" como
"nf_conntrack_ipv4" no están como módulos sin compilados dentro del
kernel.  ¿Alguna idea de por donde mirar? Gracias.