Re: Network namespaces a path to mergable code.

[Daniel Lezcano]

Eric W. Biederman wrote:
> > When an outgoing packet has the loopback destination addres, the
> > skbuff is filled with the network namespace. So the loopback packets
> > never go outside the namespace. This approach facilitate the migration
> > of loopback because identification is done by network namespace and
> > not by address. The loopback has been benchmarked by tbench and the
> > overhead is roughly 1.5 %
>
>
> Ugh.  1.5% is noticeable.

We will see with all private network namespace ...
> I think it is cheaper to have one loopback device per namespace.
> Which removes the need for a skbuff tag.

Yes, probably.
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