netdev - Re: TSO on veth device slows transmission to a crawl

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Date:	Thu, 09 Apr 2015 08:55:22 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jan Engelhardt <jengelh@...i.de>
Cc:	Linux Networking Developer Mailing List <netdev@...r.kernel.org>
Subject: Re: TSO on veth device slows transmission to a crawl

On Thu, 2015-04-09 at 17:35 +0200, Jan Engelhardt wrote:
> On Thursday 2015-04-09 17:08, Eric Dumazet wrote:
> >> >
> >> >Basic IP routing seems not properly enabled, as even ping does not work
> >> >to reach 10.10.23.23
> >> 
> >> Since I have net.ipv4.conf.all.forwarding,net.ipv4.ip_forward=1
> >> this probably got inherited into the containers, so I did not
> >> write it down into the scripts.
> >> Enable it :)
> >
> >The thing is : It is enabled.
> 
> If forwarding is on, and the config is reasonably correct (which
> I think it is), and it still won't ping, then would that not mean
> there is another bug in the kernel?

No idea. I tried 3.19 it was not working.

Note that your prior scripts (using 2 hosts) were OK.


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