Subject: Re: ip_flow.c
To: None <>
From: Bill Fenner <>
List: tech-net
Date: 01/27/1999 10:37:28
In message <> Jason Thorpe wrote:
>On Tue, 26 Jan 1999 21:23:31 -0500 (EST) 
> "Charles M. Hannum" <> wrote:
> > 2) There's no need to check the header checksum.
>Probably worth checking Router Requirements... 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.