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Date:      Sat, 27 Feb 2021 13:37:37 +0100
From:      Michael Gmelin <freebsd@grem.de>
To:        Doug Hardie <bc979@lafn.org>
Cc:        net@freebsd.org
Subject:   Re: accept_rtadv
Message-ID:  <409E9AFD-D9D5-4CA9-A923-F83F99885BDD@grem.de>
In-Reply-To: <49F826CA-266F-4A4E-AA8D-978F6F727F8C@sermon-archive.info>
References:  <49F826CA-266F-4A4E-AA8D-978F6F727F8C@sermon-archive.info>

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> On 27. Feb 2021, at 08:21, Doug Hardie <bc979@lafn.org> wrote:
>=20
> =EF=BB=BF=46rom the Handbook:
>=20
> 32.9.2. Configuring IPv6
> To configure a FreeBSD system as an IPv6 client, add these two lines to rc=
.conf:
>=20
> ifconfig_rl0_ipv6=3D"inet6 accept_rtadv"
> rtsold_enable=3D"YES"
>=20
> This does not work.  I have in rc.conf:
>=20
> ifconfig_bge0_ipv6=3D"inet6 accept_rtadv"
> ifconfig_ue0_ipv6=3D"inet6 accept_rtadv"
> ifconfig_ue1_ipv6=3D"inet6 accept_rtadv"
>=20
> On all three interfaces, ifconfig shows:
> nd6 options=3D21<PERFORMNUD,AUTO_LINKLOCAL>
>=20
> ACCEPT_RTADV is not listed and sure enough router advertisements are ignor=
ed.  I have to manually enter:
> ifconfig bge0 ipv6 accept_rtadv
> for each interface.  Then ifconfig shows:
>=20
> nd6 options=3D23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
>=20
> and the interface now accepts router advertisements.  This is a bug, but I=
 don't kn
> ow if it's in the code or the handbook.
>=20

I just tried here on 12.2-p4 with em0 and it worked as expected. I do have i=
pv4 configured on that interface too though.

Do you have anything else in your rc.conf (especially any other ifconfig lin=
es)?

If not, could you try adding

ifconfig_bge0=3D"up"
etc.

Cheers,
Michael


> -- Doug
>=20
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