IP routing mystery -- bug or feature?
Posted on 2001-06-06
Common IP wisom says that two nodes on the same physical network having different IP network adresses (e.g. 10.0.0.1/255.0.0.0 and 192.168.1.1/255.255.255.0) cannot exchange any IP packets without a third box having routing software installed.
Try this: set up two boxes like above, connect them via a crossover cable, and enter the own adress in each boxes standard gateway setting. Now see them successfully ping each other. Wow.
I have checked this using Windows 2000, NT4, Windows 95 and the LAN Manager for DOS IP client, all behave the same way. Have no non-MS clients here.
Is this normal (RFC compliant) IP behavior working on non-Microsoft IP stacks as well? Is this just coincidence or by design?