# Re: \[PATCH 01/10 net-next v3\] ipv6: convert CONFIG\_IPV6 to built-in only and clean up Kconfigs

- From: Krzysztof Kozlowski \<hidden\>
- Date: 2026-03-18 06:51:20 
- List: netdev
- Page: https://ratatoskr.run/netdev/2026/03/3465441
- Thread: https://ratatoskr.run/netdev/2026/03/3463986/t.md

```text
On 17/03/2026 15:00, Fernando Fernandez Mancera wrote:
> Maintaining a modular IPv6 stack offers image size savings for specific
> setups, this benefit is outweighed by the architectural burden it
> imposes on the subsystems on implementation and maintenance. Therefore,
> drop it.
> 
> Change CONFIG_IPV6 from tristate to bool. Remove all Kconfig
> dependencies across the tree that explicitly checked for IPV6=m. In
> addition, remove MODULE_DESCRIPTION(), MODULE_ALIAS(), MODULE_AUTHOR()
> and MODULE_LICENSE().
> 
> This is also replacing module_init() by device_initcall(). It is not
> possible to use fs_initcall() as IPv4 does because that creates a race
> condition on IPv6 addrconf.
> 
> Finally, modify the default configs from CONFIG_IPV6=m to CONFIG_IPV6=y
> except for m68k as according to the bloat-o-meter the image is
> increasing by 330KB~ and that isn't acceptable. Instead, disable IPv6 on
> this architecture by default. This is aligned with m68k RAM requirements
> and recommendations [1].
> 
> [1] http://www.linux-m68k.org/faq/ram.html
> 
> Signed-off-by: Fernando Fernandez Mancera <redacted>
> Tested-by: Ricardo B. Marlière <redacted>

That's a Kconfig/defconfig only patch, so build system. You cannot test
it in a meaning of testing code. Building code is not testing.

> Acked-by: Krzysztof Kozlowski <krzk@kernel.org>

You removed important parts of Ack. It was not provided like that.

Best regards,
Krzysztof
```