corrupted MAC error using scp

[Roberto Ragusa]

On 11/03/2011 02:01 AM, Gerhard Magnus wrote:
> I'm at my wits end with this problem:
> 
> A small LAN with three boxes and hardwired ethernet connections through
> a router.
> PuteF: server, running FC15 (x86) and LXDE  
> PuteB: running FC13 (386) and gnome
> PuteD: running FC15 (386) and KDE
> 
> I can transfer files between PuteB and PuteD using scp without any
> problems. Regardless of which machine the scp is initiated on, all file
> transfers between PuteF and PuteB, and between PuteF and PuteD fail with
> the error message "Corrupted MAC on input. Disconnecting: Packet
> corrupt. lost connection." The time this takes to happen varies within a
> few minutes.
> 
> Based my not getting this error for file transfers between PuteB and
> PuteD (running FC13 and FC15, respectively) I assumed (1) the problem is
> with PuteF or its connectivity, and (2) the problem does not involve
> different versions of Fedora. Based on what I read on the Web about this
> error I assumed the hardware was at fault. So I put in a new ethernet
> card on PuteF and connected it to the router with a new cable. But I
> still get the "Corrupted MAC" error.

Try with some

ethtool -K eth0 rx off tx off sg off tso off gso off

on PuteF and (why not?) PuteB and PuteD.

It happened to me in the past that driver bugs were able to trigger
unexplainable network failures.


-- 
   Roberto Ragusa    mail at robertoragusa.it