Subject: Re: NFS lossage from NetBSD to SunOS
To: None <greg@duke.CS.UNLV.EDU>
From: Gordon W. Ross <gwr@mc.com>
List: current-users
Date: 05/02/1996 16:00:10
> Date: Thu, 02 May 1996 12:33:21 -0700
> From: Greg Wohletz <greg@duke.CS.UNLV.EDU>
>
> >I've heard that suggested too (about udp_cksum in SunOS) but
> >it never made any difference for me if it was on or off.
> >I doubt that is the problem.
>
> Well i sure have. I've experienced both NFS file corruption and DNS
> request corruption at the hands of this. BTW, the person who said
> that COMPAT_42 turns off udpcksum in netbsd 1.1 was correct. In fact
> this seems to be the only thing that COMPAT_42 does (not to be
> confused with TCP_COMPAT_42). Unless there is some good reason for
> this I'd suggest getting rid of that option, there just isn't any good
> reason to ever turn off UDP checksums.
Is there a good test to determine when this lossage exists?
BTW, Why is the Ethernet CRC not a sufficient error check?
Gordon