ARP
This module contains all vendor crawlers of ARP and RARP implementations. Available vendor crawlers include:
RARP
ARP_Hardware
ARP Hardware Types *
ARP_Operation
Operation Codes †
https://www.iana.org/assignments/arp-parameters/arp-parameters.xhtml#arp-parameters-2
https://www.iana.org/assignments/arp-parameters/arp-parameters.xhtml#arp-parameters-1
L2TP