Multihoming under OS X

[Mike Hughes]

There's more than one way of doing this, but it's not called "multi homing".

1.) Apache virtual servers. Many domains to ONE ip address.

2.) Alias differnet IP addresses onto one or more IP interfaces, and bind apache to different interfaces.

3.) Combine the above methods.

Multi homing is having more than one network interface provide inbound or outbound traffic to a machine. It's used for servers or services that need to be extremely reliable, in case one or more networking interfaces goes down (because the ISP messed up, or the power went out on one route, or whatever).