>>>>> "Erik" == Erik Osheim <osheim@sccs.swarthmore.edu> writes:

    Erik> I've naively tried something like this in the file:

    Erik> --
    Erik> inet 1.2.3.4 netmask 255.255.255.0 broadcast 1.2.3.255
    Erik> alias 192.168.0.1 netmask 255.255.0.0 broadcast 192.168.255.255
          ^^^^^
Put 'alias' at the end of the (ifconfig) parameter line like

  192.168.0.1 netmask 255.255.0.0 broadcast 192.168.255.255 alias

(see 'man ifconfig').

Markus.