[FFmpeg-devel] [PATCH v2] avformat: enable UDP IPv6 multicast interface selection

[Rémi Denis-Courmont]

Le 20 mars 2024 13:09:15 GMT+02:00, "Ignjatović, Lazar (RS)" <Lazar.Ignjatovic at cubic.com> a écrit :
>
>This message has been marked as Public on 03/20/2024 11:09Z.
>On Wednesday, March 20, 2024 11:51 AM Rémi Denis-Courmont wrote:
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>> Same fundamental problem as previous version, AFAICT.
>>
>> -1
>
>Would you mind being more specific?

You're not supposed to guess the link ID from the local address. This is counter-sensical. And it's entirely possible to have the same LL address assigned to two interfaces (e.g. using a software bridge) anyway.

Either you know the interface you want to use and you should pass it on directly. Or you don't and using link-local doesn't make sense.