[c-nsp] Disable ARP

[sthaug at nethelp.no]

> Not to mention the waste of IPv4 space. Assigning a /30 per customer 
> would have the guys at RIPE give you some pretty mean looks the next 
> time you go to one of their meetings.

We have customers with dynamic addresses, and customers with static
addresses. For customers with static IP addresses, we use a /30 (or
/29, /28 etc) per customer. If RIPE thinks a /30 per static address
customer is wrong, they seriously need to rethink their policies.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no