If I had more than one Mac I would be tempted to try connecting
them together with a FireWire cable and get them talking to each
other using IP over FireWire on their own private network. The
"master" machine would be "dual-homed" with one Ethernet interface
to my ADSL router and one FireWire interface. It should work if
the routing table is set up right - traffic to Internet goes
out on Ethernet, traffic to second machine goes out over FireWire.
It would also have to have routing between interfaces enabled if
I wanted to the second machine to be able to talk to machines on
With my old iBook that had a modem I was tempted to try getting
two simultaneous Internet connections running - one over Ethernet
to my ADSL router and one via modem and dialup (with both going
over the same physical phone line). That should be fairly easy too.
You could choose to route some packets out over dialup and some
over ADSL. Aggregating the bandwidth into a single virtual
connection would be trickier:-)
Incidentally, I have a free dialup account that comes with my
ADSL and once when I was away I tried using it. It kept freezing.
When I got home my housemate complained that the ADSL router had
been freezing at about the same time. Turns out that the dialup
is only for troubleshooting etc when ADSL is down - it uses the
same IP address!!! The dreaded IP conflict. So I would have had
to use a different dialup account to try my experiment.
Unfortunately I don't have any spare time for such tinkering,
interesting though it may be. Even running more than one computer
would be an unjustifiable time sink when I can do everything I
need on my iMac.
PS, perhaps if I spent less time posting to c.s.m.s I would
be able to fit in a little bit of tinkering, but frustrating
as it may be I do think (perhaps vainly) that I am contributing
something of value to the Mac community, otherwise I would stop