2. Why use Proxy ARP with subnetting?  The applications for
using Proxy ARP with subnetting are fairly specific.  In my
case, I had a wireless Ethernet card that plugs into an 8-bit
ISA slot. I wanted to use this card to provide connectivity for
a number of machines at once. Being an ISA card, I could use it
on a Linux machine, after I had written an appropriate device
driver for it - this is the subject of another document. From
here, it was only necessary to add a second Ethernet interface
to the Linux machine and then use some mechanism to join the two
networks together.  For the purposes of discussion, let network
0 be the local Ethernet connected to the Linux box via an
NE-2000 clone Ethernet interface on eth0. Network 1 is the main
network connected via the wireless Ethernet card on eth1.
Machine A is the Linux box with both interfaces. Machine B is
any TCP/IP machine on network 0 and machine C is likewise on
network 1.  Normally, to provide the connectivity, I would have
done one of the following:  In