[Ns-developers] NS3 Source IP 0 Problems / Applications

[Joseph Kopena]

On 8/28/07, George Riley <riley at ece.gatech.edu> wrote:
> > "It works in Linux" is good enough reason to me to support it :P
> I wholeheartedly agree.  An IP packet addressed to the L3 broadcast
> address should forward automatically on all interfaces.  I wasn't aware
> that the RFC was ambiguous,  but even if it is we should "do the right
> thing".

I think the part that's ambiguous is what the source address on that
packet should be.  It would make sense if the source was set as the
sender's IP for that interface, so that receivers can route messages
back.  However, I haven't found anything in the RFCs or other
"official" sources about it.  I get the feeling it was left unsaid, so
as the kernels developed they settled on picking a single "primary
interface" address for the source, even though it may be
unroutable/unrepliable for most receivers.

-- 
- joe kopena
  your heroes for ghosts