usr/sbin/pptpctrl
usr/share/man/man8/pptpctrl.8
usr/sbin/pptpd
usr/share/man/man8/pptpd.8

debian/etc/modules-load.d/pptpd.conf    etc/modules-load.d/
debian/etc/ppp/pptpd-options            etc/ppp/
debian/etc/pptpd.conf                   etc/
usr/share/man/man5/pptpd.conf.5

usr/lib/pptpd/pptpd-logwtmp.so