Hardened 2.4.27-r2 Kernel compile

[DanielB2004]

Hi,

I am currently running gentoo hardened with the 2.6 hardened Kernel. This works fine. However, I need to switch to Kernel 2.4 due to OpenSWAN compatiblity. When I try to compile the Kernel the build bails out with an error :

ipt_realm.c: In function `match':
ipt_realm.c:29: error: structure has no member named `tclassid'
make[2]: *** [ipt_realm.o] Error 1
make[2]: Leaving directory `/usr/src/linux-2.4.27-hardened-r2/net/ipv4/netfilter'
make[1]: *** [_modsubdir_ipv4/netfilter] Error 2
make[1]: Leaving directory `/usr/src/linux-2.4.27-hardened-r2/net'
make: *** [_mod_net] Error 2

I've looked through the forums and Google's usenet archive but only found 1 topic without answers. Does anyone know what causes this error and how to fix it ?

Thanks in advance