https://sofop.org/
Société Française d'Orthopédie Pédiatrique – SoFOP
https://docs.oracle.com/cd/E86824_01/html/E54778/sofop-attach-passive-9e.html
sofop_attach_passive - man pages section 9: DDI and DKI Driver Entry Points
sofop_attach_active , sofop_attach_passive , sofop_detach - attach or detach a socket filter