Debugging an ARP issue (no resp to ARP requests)

[Mandeep Sandhu]

>
> Have you tried to put debug prints in arp_process function?
>

Not yet. I'm using the Ubuntu 14.10 kernel. I'm lazy and don't want to
rebuild their kernel (an config), so trying to figure out if I can
narrow down the problem without it!  :)

>>
>> I don't see any drops in "netstat -s" output as well.
>>
>> Any hints appreciated.
>
> Just a random guess, but try to disable reverse path filtering (rp_filter).

I just did actually. Unfortunately that didn't work either.

Interestingly, I tried the same experiment with 2 "regular" ethernet
interfaces on my machine and in that too the ARPs never resolve. This
indicates that this looks like a config issue and IP/routing issue?

>
>>
>> Thanks,
>> -mandeep
>
>> ????                    w??T?g  <   <   ??????   ?~e             ?~e??        ??
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>