List the modules you need and I´ll build them when I get the time.

Hey, maacruz, you are the man!

I found list of modules in http://talk.maemo.org/showthread.php?t=13725

crypto_algapi
arc4
sha1
cryptomgr
blkcipher
cbc
pcbc
ecb
ppp_mppe

Thanks

I guess need to compile also new kernel.
I applied your patches to kernel source from kernel-source package,
changed .config to include ppp_mppe module and compiled modules.
Have error while install modules into memory.
Unknown symbol crypto_alloc_base
Unknown symbol crypto_has_alg
Unknown symbol crypto_free_tfm
I tried to compile kernel and got error
mm/vmscan.c:1614 error: structure has no member named `pages_lots'
PS
Sorry. I missed *.diff files from patches directory
To be continue

CONFIG_CRYPTO in DT kernel is not set.
Kernel should be recompiled with
CONFIG_CRYPTO=y
CONFIG_PPP_MPP=y

vpn pptp works with DT!
I can upload kernel and modules.

Can you load the modules in the published DT kernel binary, or do they require a new kernel build?
Please post here the .config file for your kernel

Needs to compile new kernel because CONFIG_CRYPTO=y isn't set in DT kernel. I'll post .config later ( forget USB cabel at home )
The difference in config is:
CONFIG_CRYPTO=y
CONFIG_PPP_MPP=y

my kernel config

I just noticed that having sudser (which does not allow you to do "sudo gainroot", but does allow most "sudo" usages) is not enough -- you need rootsh. Otherwise this fails for me:
Anyway, I tried everything today & it all seemed to succeed, but after reboot I got this in X Terminal:
Not, as stated in the instructions:
I assume that this is OK based on some other comments in this thread, but please let me know if not.