This is a new upstream feature and security release. Improvements include: bypass; pre-filter — fast packet keywords; TLS improvements; ICS protocol additions: DNP3 CIP/ENIP; SHA1/SHA256 for file matching, logging & extraction; NIC offloading disabled by default; unix socket enabled by default; and App Layer stats. Documentation: http://suricata.readthedocs.io/en/suricata-3.2/