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Re: Difference between vlan pseudo interfaces and physical interfaces?



On Mon, 14 Sep 2020 10:00:08 -0400 (EDT), Mouse wrote:
>> Any hints?
> 
> What I'd probably do in this case is to add printfs to every error path
> I can find in the generic network-interface ioctl code to see which
> path is erroring.  

That's what I figured, and what I started to do (without success) in 
if_vlan.c.

> Then remove those printfs and add printfs inside the
> code which is failing.  If a call is through a pointer, then print the
> pointer and compare it against the symbol table to see what function to
> add the next set of printfs to.  I'd drill down this way until I found
> some relevant difference between the real-hardware and vlan code paths.

Looks like this text adventure does not come with cheat codes...

I'll keep digging.

Cheerio,
Hauke

-- 
Hauke Fath                        <hauke%Espresso.Rhein-Neckar.DE@localhost>
Grabengasse 57
64372 Ober-Ramstadt
Germany


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