[OpenWrt-Devel] [netifd][PATCH] interface-ip: transfer prefix route ownership to kernel when IPv6 address becomes deprecated

[Alin Năstac]

Hi Hans,

On Tue, Feb 4, 2020 at 10:49 PM Hans Dedecker <dedeckeh at gmail.com> wrote:
>
> Hi Alin,
> On Mon, Feb 3, 2020 at 4:27 PM Alin Nastac <alin.nastac at gmail.com> wrote:
> >
> > From: Alin Nastac <alin.nastac at gmail.com>
> >
> > When netifd manages the prefix route directly, it will remove it
> > the moment prefix gets deprecated. This will make it impossible
> > for the target to send ICMPv6 errors back to LAN devices still
> > using the deprecated prefix, thus breaking the L-14 requirement
> > of RFC 7084.
> >
> > Signed-off-by: Alin Nastac <alin.nastac at gmail.com>
> The patch fails to apply with the following error message :
>
> Applying: interface-ip: transfer prefix route ownership to kernel when
> IPv6 address becomes deprecated
> error: sha1 information is lacking or useless (interface-ip.c).
> error: could not build fake ancestor
> Patch failed at 0001 interface-ip: transfer prefix route ownership to
> kernel when IPv6 address becomes deprecated
>
> >                         route.addr = addr.addr;
> >                 }
> >
> > +               addr.flags |= DEVADDR_OFFLINK;
> >                 if (system_add_address(l3_downlink, &addr))
> >                         return;
> >
> > --
> > 2.7.4
> >

I've downloaded the patch from
https://patchwork.ozlabs.org/patch/1232885/ and applied it
successfully with a git am command line:

nastaca at cplx1037:/usr/localdisk/openwrt/netifd$ git am
~/Downloads/OpenWrt-Devel-netifd-interface-ip-transfer-prefix-route-ownership-to-kernel-when-IPv6-address-becomes
-deprecated.patch
Applying: interface-ip: transfer prefix route ownership to kernel when
IPv6 address becomes deprecated

Alin

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