Date: Fri, 30 Nov 2018 13:55:08 +0000 From: Bob Bishop <rb@gid.co.uk> 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: <A8B289B9-F3B0-4A39-B907-3F3D0C39ADBD@gid.co.uk> In-Reply-To: <20181130131259.1654aee3@thor.intern.walstatt.dynvpn.de> References: <20181130131259.1654aee3@thor.intern.walstatt.dynvpn.de>
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[-- Attachment #1 --] Hi, > On 30 Nov 2018, at 12:12, O. Hartmann <ohartmann@walstatt.org> wrote: > > Signed PGP part > 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? Guessing because I haven’t used v6 over ppp, but: - You probably need net.inet6.ip6.accept_rtadv set to 1 to accept IPv6 router advertisement from upstream. You should get a prefix from the upstream router. - You may also possibly need to run rtsold(8). > Regards, > > oh > > -- Bob Bishop rb@gid.co.uk [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iF0EARECAB0WIQR+a6Wh87I/iYwcbE+8xpPppLfFvwUCXAFBPAAKCRC8xpPppLfF vyMnAKDZ0zK63f4uS9289KDdtO+i74bN8gCfeS9a/ws4Dkv38rQdRiY+ZQZybYc= =KM9q -----END PGP SIGNATURE-----
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