Date: Fri, 30 Nov 2018 14:32:52 +0000 From: Gary Palmer <gpalmer@freebsd.org> To: "O. Hartmann" <ohartmann@walstatt.org> Cc: FreeBSD CURRENT <freebsd-current@freebsd.org> Subject: Re: ipv6/ppp: FreeBSD obtains linklocal on tun0 only Message-ID: <20181130143252.GA24286@in-addr.com> In-Reply-To: <20181130131259.1654aee3@thor.intern.walstatt.dynvpn.de> References: <20181130131259.1654aee3@thor.intern.walstatt.dynvpn.de>
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On Fri, Nov 30, 2018 at 01:12:32PM +0100, O. Hartmann wrote:
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> My ISP is offering IPv6 only "as an experimental feature", so I had to ask to enable the
> IPv6 stack on my connection. I'm using FreeBSD 12-STABLE as the basis for a
> router/firewall/PBX system, FreeBSD's onboard ppp client is performing the uplink and
> authetication and this works well with IPv4 for years for now.
>
> I'm using IPFW as my filtering system, reading the standard /etc/rc.ipfirewall and add
> some custom rules regarding my setup.
>
> As far as I know, with the IPv4 stack a IPv4 address is obtained automatically, so I
> would expect the same for IPv6.
>
> I'm new to IPv6 and I've trouble with my provider for a long time now, so there is a
> slight possibility that my ISP is not truthful on what they say. On the other hand, there
> is still a high probability that I do something wrong. I need need to send this ahead,
> before continueing.
>
> When booting off, I see the classic tun0 uplink with
>
> MYADDR -> HISADDR
>
> For IPv6, I only see my local linklocal address, fe80::...
>
> Checking the log of ppp (/var/log/ppp.log), there is also a fe80:: linklocal address
> assigned to the variable HISADDR. Somehow, the tun0 never obtains a IPv6 aprefix so far.
>
> Can someone give a tip?
I have
<provider>:
shell /sbin/ifconfig tun0 inet6 -ifdisabled -no_radr accept_rtadv
shell /sbin/rtsol tun0 &
in a ppp.linkup file. The alternative is to use dhcp6c, which also worked
for my provider.
(there are other lines in the linkup file also, but I think those are
the relevant ones)
Regards,
Gary
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