[c-nsp] using the first and last ip address of a range > /24 in a local pool

Brett Looney brett at looney.id.au
Sun Jul 25 19:39:33 EDT 2010


> I even attempted to reproduce the problem with an XP (SP2) workstation
> on a .255 myself, no success. Initiating and receiving connections
> from other XP workstations worked just fine, on- and off-net.

Try connecting from a XP workstation to a .255 target address that is on a
class "C" address. It will fail every time - doesn't even attempt to send
the packet. That is the buggy behaviour in question. XP assumes that the
remote endpoint has a classful subnet mask whereas it shouldn't actually
care.

B.



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