Re: [PATCH v9 35/37] [TESTING] Kconfig: enable NET_LWIP by default except for SANDBOX

[Jerome Forissier]

On 8/29/24 16:05, Simon Glass wrote:
> Hi Jerome,
> 
> On Fri, 23 Aug 2024 at 07:50, Jerome Forissier
> <jerome.foriss...@linaro.org> wrote:
>>
>> Enable NET_LWIP by default for testing purposes. SANDBOX doesn't support
>> NET_LWIP so default to NET in this case.
> 
> Sandbox needs to support NET_LWIP.

I agree in principle, but AFAICT it is not a trivial task. Does it have to
be done in this series or can it be dealt with later?

I would need to look into this more closely to give details, but if I
remember correctly the sandbox tests expect a precise sequence of network
packets. For example when doing a TFTP tests, it expects an ARP packet to
go out first, but when lwIP is used the ARP might not go out because the IP
may already be in the cache. So the sandbox is definitely not a black box
in that respect which makes things a bit more difficult.

Thanks,
-- 
Jerome