Re: TCP/IP checksumming

[Dom Sweetman <dom@algor.co.uk>]

> After musing a bit over [the IP checksum code], I have com to the
> conclusion that at least [one] of the following two statements are
> true for Linux/MIPS:
> 
>  o  Nobody uses TCP/IP.
>  o  All TCP/IP fragments are word aligned.

I suspect that, as with most flavours of unix, checksum generation is
optional.  A non-calculated checksum is set zero, and is then not
checked by the recipient.  So the third possibility is

o IP checksums are turned off

Dominic Sweetman
dom@algor.co.uk