[ath9k-devel] ath9k virtual interfaces

[ath9k-devel] ath9k virtual interfaces

[Rodolphe Marques]

hi all,

My question is not directly related to the drivers itself but anyway 
here it goes.

I have been playing with the virtual interfaces feature of this drivers 
and I have a small problem.
I am able to create multiple virtual interfaces and have them configured 
by network manager with all of them obtaining an IP address. The only 
problem is that only the first interface gets the default gateway 
configured. For the others I have to add a default gateway manually.

As anyone encountered this problem before? is there anyway I can make 
this process automatic?

Best Regards,
      Rodolphe Marques

[ath9k-devel] ath9k virtual interfaces

[Peter Stuge]

This is completely off-topic for this mailing list.

Rodolphe Marques wrote:
> The only problem is that only the first interface gets the default
> gateway configured.

In a normal system there is only one default gateway.

Please consider if you really must handle multiple default gateways.

In any case - how will your system know when to use which gateway?
Study the ip rule command. I recommend http://lartc.org/ for more
information.


//Peter

[ath9k-devel] ath9k virtual interfaces

[Rodolphe Marques]

Hi Peter,

I do an overload to the socket system call so that I can choose to which 
interface a given application should bind.
The problem I think is that linux is not expecting to have several 
interfaces connected to the same network so only  the first interface as 
a default gateway configured. So applications that I bind to interfaces 
other than the first have no network connectivity.

Rodolphe

On 04/26/2010 05:34 PM, Peter Stuge wrote:
> This is completely off-topic for this mailing list.
>
> Rodolphe Marques wrote:
>    
>> The only problem is that only the first interface gets the default
>> gateway configured.
>>      
> In a normal system there is only one default gateway.
>
> Please consider if you really must handle multiple default gateways.
>
> In any case - how will your system know when to use which gateway?
> Study the ip rule command. I recommend http://lartc.org/ for more
> information.
>
>
> //Peter
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>    

[ath9k-devel] ath9k virtual interfaces

[Peter Stuge]

Rodolphe Marques wrote:
> The problem I think is that linux is not expecting to have several
> interfaces connected to the same network

The problem is not with Linux, but with you seeming to misunderstand
sockets and IP networks. (You'll get same results on all other OSes.)

I think you need a different solution, regardless of what actual
problem you are solving. Please don't post about this on this mailing
list, and please look for a new approach to solving your problem, if
what I suggested before did not help. (Did you already read all of
lartc.org?)


//Peter

[ath9k-devel] ath9k virtual interfaces

[Benoit PAPILLAULT]

Peter Stuge a ?crit :
> Rodolphe Marques wrote:
>   
>> The problem I think is that linux is not expecting to have several
>> interfaces connected to the same network
>>     
>
> The problem is not with Linux, but with you seeming to misunderstand
> sockets and IP networks. (You'll get same results on all other OSes.)
>
> I think you need a different solution, regardless of what actual
> problem you are solving. Please don't post about this on this mailing
> list, and please look for a new approach to solving your problem, if
> what I suggested before did not help. (Did you already read all of
> lartc.org?)
>
>
> //Peter
>   
You can have anything you want in the routing table, including multiple 
gateways. However, like Peter mentioned, you should be aware that the 
kernel will probably use only one gateway at the end.

I think network-manager takes indeed care to not configure multiple 
gateways (and it changes default metric from 1 to 2 on wireless 
interfaces as well). Using dhclient on the command line will probably 
fix that part.

Regards,
Benoit