[Serusers] Problem with NatHelper Module

[Steven Kokinos]

Hello-

I'm in the process of implementing my first SER server, and am running 
into some issues with the nathelper module. I'm using 0.8.12, compiled 
locally. I set the debug level to 7, and am seeing the following 
errors, any help is greatly appreciated:

Mar 29 16:06:49 east ser: set_mod_param_regex: parameter 
<ping_nated_only> not found in module <nathelper>
Mar 29 16:06:49 east ser: parse error (88,43-44): Can't set module 
parameter
Mar 29 16:06:49 east ser: parse error (113,22-23): unknown command, 
missing loadmodule?
Mar 29 16:06:49 east ser: parse error (225,32-33): unknown command, 
missing loadmodule?

Relevant config file entries:

# ------------------ module loading ----------------------------------

# Uncomment this if you want to use SQL database
loadmodule "/lib/ser/modules/mysql.so"

loadmodule "/lib/ser/modules/sl.so"
loadmodule "/lib/ser/modules/tm.so"
loadmodule "/lib/ser/modules/rr.so"
loadmodule "/lib/ser/modules/maxfwd.so"
loadmodule "/lib/ser/modules/usrloc.so"
loadmodule "/lib/ser/modules/registrar.so"
loadmodule "/lib/ser/modules/textops.so"

# Uncomment this if you want digest authentication
# mysql.so must be loaded !
loadmodule "/lib/ser/modules/auth.so"
loadmodule "/lib/ser/modules/auth_db.so"

# !! Nathelper
loadmodule "/lib/ser/modules/nathelper.so"

# ----------------- setting module-specific parameters ---------------


Followed by lines 85-88:

# !! Nathelper
modparam("registrar", "nat_flag", 6)
modparam("nathelper", "natping_interval", 30) # Ping interval 30 s
modparam("nathelper", "ping_nated_only", 1)   # Ping only clients 
behind NAT


Section around line 113 (113 is the nat_uac_test):

      # !! Nathelper
         # Special handling for NATed clients; first, NAT test is
         # executed: it looks for via!=received and RFC1918 addresses
         # in Contact (may fail if line-folding is used); also,
         # the received test should, if completed, should check all
         # vias for rpesence of received
         if (nat_uac_test("3")) {
                 # Allow RR-ed requests, as these may indicate that
                 # a NAT-enabled proxy takes care of it; unless it is
                 # a REGISTER

                 if (method == "REGISTER" || ! search("^Record-Route:")) 
{
                     log("LOG: Someone trying to register from private 
IP, rewriting\n");


Section around line 225 (failing on nat_ua_test again):

# !! Nathelper
onreply_route[1] {
     # NATed transaction ?
     if (isflagset(6) && status =~ "(183)|2[0-9][0-9]") {
         fix_nated_contact();
         force_rtp_proxy();
     # otherwise, is it a transaction behind a NAT and we did not
     # know at time of request processing ? (RFC1918 contacts)
     } else if (nat_uac_test("1")) {
         fix_nated_contact();
     };
}