Man pages matching name probe::linuxmib.listendrops in section 3stap:

probe::linuxmib.ListenDrops.3stap.en	debian 10 / systemtap-doc
probe::linuxmib.ListenDrops.3stap.en	debian 11 / systemtap-doc
probe::linuxmib.ListenDrops.3stap.en	debian 12 / systemtap-doc