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Date:      Sat, 27 Feb 2021 08:37:27 -0500
From:      Karl Denninger <karl@denninger.net>
To:        freebsd-net@freebsd.org
Subject:   Re: accept_rtadv
Message-ID:  <edbd7376-13d5-8d00-66f5-b885b3879366@denninger.net>
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 2/27/2021 02:20, Doug Hardie wrote:
>  From the Handbook:
>
> 32.9.2. Configuring IPv6
> To configure a FreeBSD system as an IPv6 client, add these two lines to=
 rc.conf:
>
> ifconfig_rl0_ipv6=3D"inet6 accept_rtadv"
> rtsold_enable=3D"YES"
>
> This does not work.  I have in rc.conf:
>
> ifconfig_bge0_ipv6=3D"inet6 accept_rtadv"
> ifconfig_ue0_ipv6=3D"inet6 accept_rtadv"
> ifconfig_ue1_ipv6=3D"inet6 accept_rtadv"
>
> On all three interfaces, ifconfig shows:
> nd6 options=3D21<PERFORMNUD,AUTO_LINKLOCAL>
>
> ACCEPT_RTADV is not listed and sure enough router advertisements are ig=
nored.  I have to manually enter:
> ifconfig bge0 ipv6 accept_rtadv
> for each interface.  Then ifconfig shows:
>
> nd6 options=3D23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
>
> and the interface now accepts router advertisements.  This is a bug, bu=
t I don't know if it's in the code or the handbook.
>
> -- Doug
>
I'm running 12.2-STABLE and have no problem with this; snippet from=20
/etc/rc.conf:

#
# IPv6 on internal interface, autoconfigure
#
ifconfig_igb0_ipv6=3D"inet6 accept_rtadv"
rtsold_enable=3D"YES"

And it does.

=2E....

 =C2=A0 =C2=A0 =C2=A0 =C2=A0 (addresses and options)
 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 status: active
 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 nd6 options=3D23<PERFORMNUD,A=
CCEPT_RTADV,AUTO_LINKLOCAL>

--=20
Karl Denninger
karl@denninger.net <mailto:karl@denninger.net>
/The Market Ticker/
/[S/MIME encrypted email preferred]/

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