Jails: How do i limit what ifconfig shows?

[xor]

Hullo
First off, thanks for a lovely operating system <3

I decided to go for FreeBSD perhaps 3 days ago. Before, ive been an
Debian/OpenBSD guy, and ive only used my obsd box for redundant
firewalls and networking. Ive not been running any services off the
boxen.

The reason I decided to go for FreeBSD is because of the Jails. Ive
looked around a bit, but I can not find anything about how to limit
what interfaces that ifconfig shows. I would like it to hide pretty
much everything so that _no_ information about the host systems
networking leaks into the jails. I dont want jails to know anything
but their IP-numbers and which computer to use for DNS lookups,
essentially.

Is there any good text out there that describes how to do this? Ive
searched a bit for it, but Ive been unable to find anything but the
basics.


Thanks!