VMS Help LANCP, CLEAR, DEVICE, Qualifier, /ALL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Deletes all LAN devices in the LAN volatile device database. If
    you specify a device name, all matching LAN devices are selected,
    for example: E to select all Ethernet devices, F for FDDI, I for
    Token Ring, EW to select all PCI Ethernet PCI devices.