On Sun, 3 Mar 2002, Chinna N.R. Pellacuru wrote:
> The checksum is a simple 16-bit ones-complement sum of the data. If the
> checksum is so fool proof why is it not a MUST, and is only optional...
It *is* a MUST for TCP. Only for UDP does the sender have the option of
not including a checksum... and if it's included, checking it is a MUST.
Henry Spencer
henry@spsystems.net