In June 2001 I got a subscription with a Dutch cablemodem provider, Casema. They (at that time) gave access using COM21 modems with PPPoE (PPP over Ethernet) as network protocol. All discussions about PPPoE aside, one disadvantage is that my IP address changes with every session. And it's something which looks like 12dyn219.com21.casema.net which is a bit hard to remember anyway. So, I wanted a name in my own domain to point at my cable modem.