However there is a workaround!
First you will need to checkout the vpnc-nortel sources directly from the SVN repo. It would be good to have subversion and vpnc dependencies before so please run:
sudo apt-get install build-essential subversion
sudo apt-get build-dep vpnc
Then to checkout from SVN:
svn co -r 517 http://svn.unix-ag.uni-kl.de/vpnc/branches/vpnc-nortel
This will get the revision 517 which is the latest at the time of writing this post.
One minor step before building the sources is to edit the Makefile and set the PREFIX var to be /usr
Now you can build the sources:
make
sudo make install
From now on you should be able to use it to connect via PIN-token authentication. Settings are stored in the /etc/vpnc where you can set default configuration by editing default.conf file. For example:
IPSec gateway <gateway_address>
IPSec ID <group_username_or_id>
IPSec secret <user_password>
Vendor nortel
Nortel Client ID V05_01
IKE Authmode PIN-token
Xauth username <auth_username>
Xauth PIN <pin>
To connect just run: sudo vpnc
To disconnect: sudo vpnc-disconnect
This is it. Cheers!