[lwip-devel] [task #9033] Support IEEE 802.1q tagged frame (VLAN)

[Simon Goldschmidt]

Follow-up Comment #4, task #9033 (project lwip):

I've had a look through our stack needing the VLAN tag support: only RX is
needed, I'd not implement TX right now (don't know if it's needed). Since RX
only involves splitting the header structs, I'd still target that at 1.3.1.

With that, even nested VLAN headers (are they allowed?) wouldn't be a
problem.

I'd only enable this with an option (maybe a flag in the netif) to prevent
receiving all VLAN traffic (or only if you want it). Checking the VLAN can be
implemented easily, too, but I don't know if that's needed (at least not for
me, right now).

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