[Click] click-align gives incorrect output

[Eddie Kohler]

Hi Tom,

I believe that in any tunnel opened with either KernelTun or KernelTap on 
Linux, Linux will respond to the primary IP address.  That's the nature of the 
beast.  Try userlevel FromDevice or ToDevice if you want full control of the 
device.

Eddie


Tom Parker wrote:
> 2008/7/16 Eddie Kohler <kohler at cs.ucla.edu>:
>> I think you might be confused.  In "fromhost_cl[0]" it is allowed to omit
>> the "[0]", so your "fromhost_cl[0] -> ARPResponder at 3" connection is still
>> there, fourth line from the bottom.  The configuration looks totally valid
>> to me. Note that in your input config fromhost_cl[0] -> ... -> tap0 ->
>> fromhost_cl.
> 
> Ah... ok, that makes much more sense now. Haven't been using click for
> very long, and didn't know you could omit [0].
> 
> On a related note regarding the config itself and what I was trying to
> do, I want to setup a KernelTap that will receive all of the Ethernet
> packets sent to a particular IP address. However, for some reason
> attempting to ping 1.0.0.1 with a KernelTap(1.0.0.1/24) gets the
> kernel responding, but pinging 1.0.0.2 sends the packet to Click... is
> there any way I can get Click to intercept packets sent to 1.0.0.1 as
> well? The KernelTun documentation says this is the expected behaviour,
> but I'd hoped that things would be different for KernelTap. I've also
> tried setting up tun/tap devices manually, but it doesn't appear to
> help.
> 
> Tom