Victor Duchovni: > On Mon, Sep 29, 2008 at 11:53:07AM -0400, Adam Mason wrote: > > > ifconfig lo0 1.2.3.4 netmask 255.255.0.0 -arp up > > Leave the *primary* IP address of lo0 as 127.0.0.1, add "1.2.3.4" > (examples really should use 192.0.2.0/24 addresses) as a secondary > IP address for lo0. Commands for adding secondary IPs are O/S > specific, consult your docs.
In FreeBSD, this would be: # ifconfig fxp0 inet 1.2.3.4 netmask 255.255.255.255 alias Yes, that is a mask of 255.255.255.255. This example assumes that the "main" IP address is in the same subnet as the alias one. Wietse