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From: Cong Wang <cwang@twopensource.com>
To: Stephane Chazelas <stephane.chazelas@gmail.com>
Cc: Randy Dunlap <rdunlap@infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: network interfaces called "all", "default" or "config"
Date: Thu, 14 Aug 2014 11:37:53 -0700	[thread overview]
Message-ID: <CAHA+R7MLQtYF5vBN0D66Wk8iyGZABf5=Az293gUH6w=4THv8Gw@mail.gmail.com> (raw)
In-Reply-To: <CACsCDOP8DOnB0zZtT_WLhiBXjxXh1aH1eGF9_h0dRN1i9YDU-A@mail.gmail.com>

On Thu, Aug 14, 2014 at 2:41 AM, Stephane Chazelas
<stephane.chazelas@gmail.com> wrote:
> By the way, this is related:
>
> $ ip link add link eth0 eth0:123 type vlan id 123
> $ ip link del link eth0 eth0:123
> RTNETLINK answers: Operation not supported

Kernel reads "eth0:123" as an alias of "eth0", so it will just
truncate the dev name into "eth0":


        ifr.ifr_name[IFNAMSIZ-1] = 0;

        colon = strchr(ifr.ifr_name, ':');
        if (colon)
                *colon = 0;

  parent reply	other threads:[~2014-08-14 18:37 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-23 11:33 network interfaces called "all", "default" or "config" Stephane Chazelas
2014-07-23 14:56 ` Randy Dunlap
2014-08-14  9:41   ` Stephane Chazelas
2014-08-14 18:28     ` Stephen Hemminger
2014-08-14 18:37     ` Cong Wang [this message]
2014-08-15  8:33       ` Stephane Chazelas
2014-08-15 17:32         ` Cong Wang

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