[tproxy] Patch errors on vanilla kernels?

[David]

Hi,

Applying the patches on my system fails. I've tried several different
versions:
cttproxy-2.4.25-1.2.0 on a vanilla Linux 2.4.25 kernel
cttproxy-2.4.25-1.9.3 on a vanilla Linux 2.4.25 kernel
cttproxy-2.6.3-1.9.2 on a vanilla Linux 2.6.3 kernel
cttproxy-2.6.5-1.9.3 on a vanilla Linux 2.6.3 kernel
All patches fail. The best option is cttproxy-2.4.25-1.2.0, which only
generates one error, that may possibly be fixed by hand (ip_contrack.h).
The worst option is cttproxy-2.6.5-1.9.3, which generates dozens of
errors.

Do you use pre-patched (red hat, suse) kernels or something? I don't know
what else could have caused these problems. Does anyone know this problem?