Nils Ohlmeier wrote:
The nathelper module features you are trying to use are not available in the rpm or source of the 0.8.12 release. They are only available from the CVS stable branch (http://www.iptel.org/ser/cvs/).
Somebody should point that out at http://iptel.org/ser because most people seem to run into that problem. Alternatively a update of the .deb .rmp files would help.
-- Arnd