franklin.bowen@gmail.com wrote:
> Yes, the system is running XP. Thanks for the information. I got
> "around" the problem by installing an ethernet PC card (USB would
> probably work just as well) and plugging an ethernet cable between the
> two NICs.
>
> They auto-configured to different subnets (169.254.87.x and
> 169.254.104.x) but I just set the last two octets in my IPv4 broadcast
> address to 0xFF and I can now continue my development work. Yay!

I bet you'll find they're not in different subnets afterall. The mask
on those addresses should be a /16. You might want to put something
into your code so that it automagically figures out the correct
broadcast address to use.

I've had to do similar nonsense with my PowerBook: For some reason the
perl pcap libraries refuse to read from a capture file if my NIC
doesn't have a link. It makes no sense, but I haven't got to the
bottom of it yet. My workaround is to carry a PCMCIA ethernet card
(for which I don't even have drivers) and string that NIC over to my
onboard Ethernet.

Frustratingly, an Ethernet loopback plug like this one doesn't seem to
do the trick:

http://docs.sun.com/app/docs/doc/816...82opb3g?a=view

Maybe loopback plugs cannot work in a transceiver that supports
auto-crossover?

/chris