From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: Problem with iflink in netns
Date: Tue, 13 May 2014 17:51:18 -0700
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Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
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To: Cong Wang <cwang@twopensource.com>
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On Tue, 13 May 2014 13:44:24 -0700
Cong Wang <cwang@twopensource.com> wrote:

> On Tue, May 13, 2014 at 1:05 PM, Stephen Hemminger
> <stephen@networkplumber.org> wrote:
> >
> > That won't solve the problem.
> >  1. a pointer increase size of netns and requires refcount
> 
> Yes.
> 
> >  2. iflink is still exposed in kernel user API and has to be set
> >     otherwise the device is falsely reported.
> 
> Then report 0 which is not a valid ifindex?

But that is what devices without a parent report.