Classical IP Interface Type

The SunATM software allows you to configure your interface as a Classical IP ARP server or a clien or in a standalone mode, with locally configured entriest. You can also use standalone mode to connect two systems back-to-back, using a Permanent Virtual Circuit (PVC). These three modes are options on the Classical IP parameter menu. IPv6 always operates in standalone mode.

If you are running IPv4 and IPv6 simultaneously, you cannot configure an ARP client or server for IPv4 on that Interface. It must also be configured in standalone mode