DOKK / manpages / debian 11 / systemtap-doc / probe::netdev.unregister.3stap.en
PROBE::NETDEV.UNRE(3stap) Networking Tapset PROBE::NETDEV.UNRE(3stap)

probe::netdev.unregister - Called when the device is being unregistered

netdev.unregister 

dev_name

The device that is going to be unregistered

tapset::networking(3stap)

November 2020 SystemTap Tapset Reference