Subject: Re: ip_flow.c
To: Bill Fenner <fenner@parc.xerox.com>
From: Ignatios Souvatzis <is@jocelyn.rhein.de>
List: tech-net
Date: 01/27/1999 21:05:39
On Wed, Jan 27, 1999 at 10:37:28AM -0800, Bill Fenner wrote:
> In message <199901270737.XAA17070@lestat.nas.nasa.gov> Jason Thorpe wrote:
> >On Tue, 26 Jan 1999 21:23:31 -0500 (EST) 
> > "Charles M. Hannum" <root@ihack.net> wrote:
> > > 2) There's no need to check the header checksum.
> >
> >Probably worth checking Router Requirements...
> 
> 4.2.2.5 Header Checksum: RFC 791 Section 3.1
>    
>    As stated in Section [5.2.2], a router MUST verify the IP checksum of
>    any packet that is received, and MUST discard messages containing
>    invalid checksums.  The router MUST NOT provide a means to disable
>    this checksum verification.

Uhm, is this still valid? Whats the status of the incremental checksum RFC?

	-is