Yes, I know those are also used for the eth0:1 "aliases", but the bug
is, since it is allowed to do
ip link add link eth0 eth0:123 type vlan id 123
Then the
ip link del link eth0 eth0:123
should be allowed as well. Or probably better to avoid confusion
ip link add link eth0 foo:bar type vlan id 123
should not be allowed.
Worse:
ip link add link eth0 foo:bar type vlan id 1
ip link add link eth0 foo type vlan id 2
ip link del foo:bar
deletes foo instead of foo:bar.
On 14 August 2014 19:37, Cong Wang <cw...@twopensource.com> wrote:
> On Thu, Aug 14, 2014 at 2:41 AM, Stephane Chazelas
> <stephane.chaze...@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;
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