Re: Can I bind USB/other interface/device number (e.g. cdceX) to particular MAC, USB serial number or the like?

Oh. Yeah if there's no performance penalty on such a solution then
great. Could someone confirm that?


So this works for cabled ethernet, where NIC promiscuous mode due to the
bridge won't hurt.

Also it wouldn't work for wireless interfaces. Also to be robust it
presumes that NIC unplug implies automatic immediate detachment of the
unplugged interface from the bridge, so that a newly plugged/replugged
NIC not under any circumstance will be made by the kernel to
automatically participate in any bridge.

On 2017-06-02 02:41, Joel Wirāmu Pauling wrote:
> I don't know the bridge code in OpenBSD as well as I know it in Linux -
> basic bridges don't add any appreciable overhead on that platform until
> you
> start mucking around with bridge specific things.
>
> It just means you maintain an arp table distinct from each
> sub-interface.
>
> tl;dr - it's not going to hurt your performance.
>
>
>
> On 2 June 2017 at 14:37, Tinker <tinkr@openmailbox.org> wrote:
>
>> In the kernel however that implies an internal indirection/one or more
>> additional rounds copying of all traffic and passing around, right, so
>> even
>> it works quite well, it's not optimal right?
>>
>> Anyhow sure that is an effective workaround if needed.
>>
>>
>> On 2017-06-02 02:20, Joel Wirāmu Pauling wrote:
>>
>>> There are several ways of doing this.
>>>
>>> I suggest just using a bridge and adding a bunch of sub-devices into
>>> it.
>>>
>>> On 2 June 2017 at 14:00, Tinker <tinkr@openmailbox.org> wrote:
>>>
>>> Wait, can you give an example of how that would work?
>>>>
>>>> I was not aware of any aliasing mechanism e.g. I could designate
>>>> "cdce10001" or "virt10001" to be the cdce that has MAC so and so.
>>>>
>>>> On 2017-06-02 01:12, Joel Wirāmu Pauling wrote:
>>>> You can use a Virtual Interface/Alias that is consistent so that
>>>> you
>>>> don't need to change scripts/etc in relation to network config - I
>>>> believe this is suggested in several man pages etc as a solution to
>>>> consistent interface naming.
>>>>
>>>> On 2 June 2017 at 12:50, Tinker <tinkr@openmailbox.org> wrote:
>>>>
>>>> On 2017-06-02 00:45, Joe Gidi wrote:
>>>>
>>>> Good news! You can have this already.
>>>>
>>>> Yay!
>>>>
>>>> Go run Linux.
>>>>
>>>> Em -
>>>>
>>>> Nay!
>>>>
>>>> No yay. Hope to see a solid solution to this problem on a
>>>> non-crappy OS soon.
>>>>
>>>
>>