[PATCH] build: always set CONFIG_IPV6

[Thibaut]

> Le 18 août 2022 à 15:40, Stijn Tintel <stijn at linux-ipv6.be> a écrit :
> 
> On 16/08/2022 20:00, Thibaut VARÈNE wrote:
>> Disabling this build tunable breaks build and seems unrealistically
>> likely to be fixed.
>> 
>> This patch sets the related CONFIG to always true and removes the
>> config prompt, keeping the change minimal, and, should !CONFIG_IPV6 ever
>> be fixed, easy to revert.
> 
> If we're always going to set it to yes, just drop the option entirely and enable it in the generic kernel configs. Aside from that:

CONFIG_IPV6 is not a kernel config, it’s a tree-wide one.

My idea was to keep the change as small as possible should we ever want to revert, while preventing further pointless bugreports[1].

Entirely removing the config option requires more invasive changes throughout the tree and the package repositories, which is significantly less trivial than this "first step".

Cheers,
Thibaut

[1] https://github.com/openwrt/openwrt/issues/9580