suricata
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detect: absent keyword to test absence of sticky buffer
Link to redmine ticket: https://redmine.openinfosecfoundation.org/issues/2224
Describe changes:
- detect: adds
absent
keyword to match on absent buffer
SV_BRANCH=https://github.com/OISF/suricata-verify/pull/1942
https://github.com/OISF/suricata/pull/11301 with use of SIGMATCH_OPTIONAL_OPT