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Date:	Thu, 14 Aug 2014 11:37:53 -0700
From:	Cong Wang <>
To:	Stephane Chazelas <>
Cc:	Randy Dunlap <>,
	"" <>,
	"" <>
Subject: Re: network interfaces called "all", "default" or "config"

On Thu, Aug 14, 2014 at 2:41 AM, Stephane Chazelas
<> 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;
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