Testing 2.9.1 and getting 'Unknown preprocessor: "sip"'

[Miguel Alvarez <miguellvrz9 () gmail com>]

I'm finally getting around to testing 2.9.1 but when I test my updated
snort.conf, I'm getting 'Unknown preprocessor: "sip"':

# which snort
/usr/sbin/snort

# /usr/sbin/snort -V

   ,,_     -*> Snort! <*-
  o"  )~   Version 2.9.1 IPv6 GRE (Build 71)
   ''''    By Martin Roesch & The Snort Team:
http://www.snort.org/snort/snort-team
           Copyright (C) 1998-2011 Sourcefire, Inc., et al.
           Using libpcap version 1.1.1
           Using PCRE version: 6.6 06-Feb-2006
           Using ZLIB version: 1.2.3


# /usr/sbin/snort -c /etc/snort.test/snort.conf -T
...
ERROR: /etc/snort.test/snort.conf(459) Unknown preprocessor: "sip".
Fatal Error, Quitting..

And here's the sip preprocessor section from snort.conf (should be
exactly the same from the stock 2.9.1 snort.conf):

# SIP Session Initiation Protocol preprocessor.  For more information
see README.sip
preprocessor sip: max_sessions 40000, \
   ports { 5060 5061 5600 }, \
   methods { invite \
             cancel \
             ack \
             bye \
             register \
             options \
             refer \
             subscribe \
             update \
             join \
             info \
             message \
             notify \
             benotify \
             do \
             qauth \
             sprack \
             publish \
             service \
             unsubscribe \
             prack }, \
   max_uri_len 512, \
   max_call_id_len 80, \
   max_requestName_len 20, \
   max_from_len 256, \
   max_to_len 256, \
   max_via_len 1024, \
   max_contact_len 512, \
   max_content_len 2048

This is on CentOS 5.6.  The only google result for this was from a
Japanese IRC chat and it didn't make any sense. :-( They also happened
to be running CentOS but I doubt that's the problem.

It was compiled with the following options (from the provided .spec file):

SNORT_BASE_CONFIG="--prefix=%{_prefix} \
                  --bindir=%{_sbindir} \
                  --sysconfdir=%{_sysconfdir}/snort \
                  --enable-decoder-preprocessor-rules \
                  --enable-targetbased \
                  --enable-zlib \
                  --enable-sourcefire \
                  --enable-ipv6 \
                  --enable-perfprofiling \
                  --enable-gre \
                  --enable-ppm \
                  --enable-normalizer \
                  --enable-reload"

Does anyone have any suggestions?

Thank you

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