# Re: \[PATCH net-next 2/2\] net: ipv6: don't generate link local address on PUREIP device

- From: rocco.yue \<hidden\>
- Date: 2021-02-23 02:19:02 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2021/02/8804673
- Thread: https://ratatoskr.run/linux-mediatek/2021/01/6252386/t.md

```text
On Thu, 2021-02-04 at 14:06 +0800, rocco.yue wrote:
> On Fri, 2021-01-29 at 19:07 -0800, Jakub Kicinski wrote:
> > On Thu, 28 Jan 2021 13:58:09 +0800 Rocco Yue wrote:
> > > PUREIP device such as ccmni does not need kernel to generate
> > > link-local address in any addr_gen_mode, generally, it shall
> > > use the IPv6 Interface Identifier, as provided by the GGSN,
> > > to create its IPv6 link-ocal Unicast Address.
> > > 
> > > Signed-off-by: Rocco Yue <redacted>
> > 
> > There is no ccmni driver in the tree - is this for non-upstream
> > driver?
> 
> ccmni is the name of MediaTek mobile interface, currently, it is
> non-upstream driver and we plan to upstream these driver codes this
> year.
> 
> Honestly, the reason why upstreamed this patch is not only that it can
> be used by ccmni, but also I observed that the current Linux kernel does
> not generate ipv6 link-local address only when addr_gen_mode ==
> IN6_ADDR_GEN_MODE_NONE. We hope kernel can add a device type so that no
> ipv6 link-local address can be generated in any addr_gen_mode.

Hi Jakub,

gentle ping for this patch set.

Thanks
Rocco
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