IPsec in 2.5.62 broken?

[Ralf Spenneberg <ralf@spenneberg.de>]

Hi,

I am just trying to compile 2.5.62 with IPsec built in. It chokes when
linking:
        ld -m elf_i386 -e stext -T arch/i386/vmlinux.lds.s
arch/i386/kernel/head.o arch/i386/kernel/init_task.o   init/built-in.o
--start-group  usr/built-in.o
 arch/i386/kernel/built-in.o  arch/i386/mm/built-in.o 
arch/i386/mach-default/built-in.o  kernel/built-in.o  mm/built-in.o 
fs/built-in.o  ipc/built-in.o  security/built-in.o  crypto/built-in.o 
lib/lib.a  arch/i386/lib/lib.a  drivers/built-in.o  sound/built-in.o 
arch/i386/pci/built-in.o  net/built-in.o --end-group  -o .tmp_vmlinux1
net/built-in.o: In function `pfkey_msg2xfrm_state':
net/built-in.o(.text+0x63ae0): undefined reference to `xfrm6_get_type'
make: *** [.tmp_vmlinux1] Fehler 1

Anybody able to help me. Unfortunately I am not that good in kernel
programming.

I am using gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7)

CONFIG Options:
CONFIG_NET_KEY=y
CONFIG_INET_AH=y
CONFIG_INET_ESP=y
CONFIG_XFRM_USER=y
CONFIG_CRYPTO=y
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_DES=y

Cheers,

Ralf