You can put multiple IPs on a computer. (Or VMs, LXCs, etc. which would each get an IP) Now what size of machine? (I don't really care, and the original ques

You can put multiple IPs on a computer. (Or VMs, LXCs, etc. which would each get an IP) Now what size of machine? (I don't really care, and the original question does have a whiff of malicious intent, but scaling discussions are sometimes interesting...)