Why is their a special process using additional IP’s with OVH?
IPv4 addresses are running out and if every customer would need a block configured with a gateway, broadcast and network address for each server (and IP-block), there would be a huge address overhead (and cost money). So, more addresses available to sell, less of an overhead, why not?
TL;DR To try to maximize the utilization of IPv4 addresses.
Why do we need virtual macs?
The virtual MAC’s is a simple way of ensuring that you are the one using your addresses and not anyone else on the OVH network. We don’t wanna pay for anyone else and with OVH’s support (you are paying for unmanaged) you’d rather have everything automatic than manual, right? I would at least.
TL;DR To make sure only you can use the addresses you purchased.