Re: Strange things which should never happen (was Re: RFC 1918)

At 10:14 PM 7/14/00 -0700, Sean Donelan wrote:

I don't know my TCP/IP stack well enough, but what happens when a host with multiple interfaces, one of which is assigned an RFC1918 address, receives an packet through another interface with a source address the same RFC1918 address. Are the stacks smart enough to realize the packet is really an external packet, or will they assume the packet came from inside.

Nope - at least none of the ones I have seen. Strictly speaking, the host *should* not care from which interface a packet is received unless you have some type of firewall/filtering rule-set installed. TTFN, patrick