To: freebsd-questions@freebsd.org
References: <878w4svp18.fsf@cjlinux.localnet> <4C5317C0.9010303@unsane.co.uk>
From: Carl Johnson <carlj@peak.org>
Date: Fri, 30 Jul 2010 15:50:39 -0700
In-Reply-To: <4C5317C0.9010303@unsane.co.uk> (Vincent Hoffman's message of
	"Fri\, 30 Jul 2010 19\:19\:44 +0100")
Message-ID: <87zkx8twhs.fsf@cjlinux.localnet>
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Subject: Re: IPv6 rtadv on FreeBSD 8.1?
Precedence: list

Vincent Hoffman <vince@unsane.co.uk> writes:

> On 30/07/2010 18:48, Carl Johnson wrote:
>> I have running versions of 7.3 and 8.0, so I tried experimenting with
>> 8.1 in VirtualBox, but I ran into a couple of problems.  I have an 8.0
>> system that is running a IPv6 tunnel to sixxs.net, and it is running
>> rtadvd to act as the gatway for my network.  On the 8.1 system I
>> enabled IPv6 in rc.conf, but it is not picking up the advertised
>> address.  I can add it manually, and have put it in rc.local for now,
>> but it seems it should work automatically as my others do.  I noticed
>> that the ifconfig output shows a new line that is not in 8.0:
>>         nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
>>
>> Is there something that has changed in 8.1 that I have to enable, or
>> is there a problem with 8.1?  IPv6 is working to the extent that it
>> did assign a link-local address, and I can use that address as long as
>> I specify the interface.  My configuration is the same, and I didn't
>> have to enable anything on the others to get the global address
>> assigned automatically.
>>
>> Thanks for any advice.
>>   
> I dont knw if its expected or not but try running
> sysctl net.inet6.ip6.accept_rtadv=1
>
> (to make it persistent  echo "net.inet6.ip6.accept_rtadv=1" >>
> /etc/sysctl.conf )

I had already checked that and it is enabled by default, but thanks
for the suggestion anyways.  It also turns out that I was wrong about
it working with manual configuration.  I forgot that the automatic
configuration sets up the external routing, and I haven't figured out
how to do that manually.  So it works for my internal network, but
nowhere else.
-- 
Carl Johnson		carlj@peak.org