netdev - Re: [iproute PATCH] ip-link: Fix listing of alias interfaces

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Message-ID: <5199122e-2ceb-6dd3-d0e7-b008f938eedc@gmail.com>
Date:   Fri, 8 Feb 2019 09:50:19 -0800
From:   David Ahern <dsahern@...il.com>
To:     Michal Kubecek <mkubecek@...e.cz>, netdev@...r.kernel.org
Cc:     Phil Sutter <phil@....cc>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Roopa Prabhu <roopa@...ulusnetworks.com>
Subject: Re: [iproute PATCH] ip-link: Fix listing of alias interfaces

On 2/8/19 4:09 AM, Michal Kubecek wrote:
> Not only that, other ip link subcommands also use ioctl for interface
> lookup so that e.g. "ip link del dummy1:x" deletes dummy1 without any
> complaint.
> 
> But as I mentioned earlier in http://patchwork.ozlabs.org/patch/1037934/
> I'm not sure this behaviour is really desirable.

I sent a patch some time ago to convert ll_name_to_index to use an
netlink message first and only fallback to if_nametoindex if it fails.
That should fix the problem you mentioned