IP aliasing question

[Zachary DeAquila <zachary@zachs.place.org>]

I have a single machine on the net (zachs.place.org)
with ip aliases to make it also be (eth0:0) juggling.place.org
and (eth0:1) www.worldwind.com.  Which all works fine.
Except... that anywhere I telnet to from that machine
sees me as coming from www.worldwind.com instead of from 
zachs.place.org.  Which screws up ip-based filters, and etc.
So does anyone know how/why this happens? IMHO, telnets should
appear to come from the 'primary' (non-aliased) IP, not from
one of the aliases.  ideas?

 --Zachary