[Devel] Re: Net containers config and usage

[Eric W. Biederman]

"Chris R. Jones" <chris at versecorp.net> writes:

> On Thu, Jan 15, 2009 at 11:21:43PM +0100, Daniel Lezcano wrote:
>> chris at versecorp.net wrote:
>> >>Did you tried with the macvlan ?
>> >>    
>> >
>> >I just tried it - and it does work - I can move the vlan interfaces into 
>> >the
>> >namespace.   But that's not a solution for us - we really need to support
>> >communications out to other nodes on the network that we can't count on 
>> >using
>> >vlan.  
>> >  
>> Perhaps I am misunderstand but the macvlan is just an "eth aliased" 
>> interface, so you should but able to communicate with the outside world 
>> and keep the same performances as the physical device, no ? The only 
>> drawback with the macvlan is you can not communicate on the same host 
>> between different namespaces. 

And that drawback (when all the macvlan are off of the same network device is
actually a bug).

>We did some benchmark last year wih the 
>> macvlan and we got very good results.
>
> Oh great, I confused the macvlan support with 802.1q vlan interfaces 
> (as added through vconfig).  macvlan does look very promising - I was able 
> to create a macvlan interface and assign it to my namespace - looks pretty good!

Good to hear you have a solution.  Putting physical hardware devices in network
namespaces is definitely on the todo.  But it looks to be a while before we get
all of the details sorted out.

Eric
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