"final" version of alias functions was not final. daniel suggested to make
rr_count a psedo variable $rr_count exported by nathalper module.
it turned out a very easy thing to do and i did it. new version of
sr_3.0 based nathelper.c and the example are available as
http://box.tutpro.com/tmp/nathelper.c
and
http://box.tutpro.com/tmp/alias_example.txt
-- juha