This task involves reviewing the accel-ppp upstream repo to identify security patches that have been merged or released there, then porting (backporting) those fixes into the accel-ppp-ng repo
Check the upstream repo's commit history, changelog https://github.com/accel-ppp/accel-ppp/commits/master/
Identify which commits (security fixes/memory leak fixes/race conditions) we can backport
Cherry-pick or manually adapt the relevant patches to the accel-ppp-ng repo.