Ethereal-users: Re: [Ethereal-users] Incorrect Frame Length and Missing FCS - Attachments

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From: Guy Harris <gharris@xxxxxxxxx>
Date: Fri, 25 Jun 2004 19:43:30 -0700
On Wed, Jun 23, 2004 at 09:31:40PM -0700, Justin Walker wrote:
> Typically, the system's network device handlers do not provide the FCS 
> to applications; that is normally stripped off by the device and 
> effectively dropped.  The only system I know of for sure that provides 
> this facility (under program control only) is AIX 4.x, and not all 
> drivers do this.

Actually, your former employer's driver for at least one of their
gigabit interfaces does so, with no option to turn it off.  (And their
systems use PowerPC processors, just as the ones AIX 4.x runs on do.
:-))

So perhaps he should buy a PowerMac - I don't know whether the shiny new
G5's Ethernet interfaces have a driver that captures the FCS, but they
might.