Man pages matching name probe::netdev.change_mtu in section 3stap:

probe::netdev.change_mtu.3stap.en	debian 10 / systemtap-doc
probe::netdev.change_mtu.3stap.en	debian 11 / systemtap-doc
probe::netdev.change_mtu.3stap.en	debian 12 / systemtap-doc