Re: net.ipv6.conf.all.accept_ra=2 does not work

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From: Nicolas Piatto <[email protected]>
To: dE <[email protected]>, [email protected]
Message-ID: <[email protected]>
Subject: Re: net.ipv6.conf.all.accept_ra=2 does not work
References: <CADofXPCVB_b+UtK8NcSQ9O5K4vnY2ZXdFX-pxTCJnT8GJK73Sw@mail.gmail.com>
In-Reply-To: <CADofXPCVB_b+UtK8NcSQ9O5K4vnY2ZXdFX-pxTCJnT8GJK73Sw@mail.gmail.com>

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On 1/4/22 09:50, dE wrote:
> Hello everyone,
>       I'm trying to configure my machine as an IPv6 router. When I set
> net.ipv6.conf.all.forwarding=3D1, the default routes get deleted, which=

> is expected. But setting net.ipv6.conf.all.accept_ra=3D2 does not help
> either. Set it before or after net.ipv6.conf.all.forwarding=3D1, the
> default routes WILL get deleted and I've to add it manually. I've even
> tried setting these in sysctl.conf and rebooted with the same effect.

Hi,

I got once that problem and added the default-route statically as a
hotfix (I used a setup with FHRP, getting the route via RA was not a
strong-requirement so I did not tshoot further)

Did you try to set the `accept_ra=3D2` under the interface itself instead=

of all ?

reading the doc:
```
Functional default:

    enabled if local forwarding is disabled.
    disabled if local forwarding is enabled.
```

I'm wild guessing assuming that `all.accept_ra=3D2` might be overided by =
a
default `disabled` under the interface.

Best regards,
Nicolas

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