Re: IPv6 problem after 6.3 upgrade

On Tue, Apr 03, 2018 at 03:43:07PM +0200, Paul de Weerd wrote:
> On Tue, Apr 03, 2018 at 03:23:19PM +0200, Miles wrote:
> |
> | Am 03.04.2018 um 14:56 schrieb Leo Unglaub:
> | > Hello,
> | > i have a IPv6 problem since i upgraded to 6.3. I cannot reach other
> | >
> | /etc/hostname.vio0
> | >> inet 195.201.22.203 255.255.255.255
> | >> inet6 2a01:4f8:1c0c:4ed8::10 64
> | >> !route add -inet 172.31.1.1 -llinfo -link -static -iface vio0
> | >> !route add -inet default 172.31.1.1
> | >
> |
> | I had also an IPv6 issue. The solution was to add -soii into the
> | hostname.vio0 :
>
> What was your issue?
>
> | /etc/hostname.vio0
> |
> |
> | inet 195.201.22.203 255.255.255.255
> | inet6 2a01:4f8:1c0c:4ed8::10 64
> | -soii
> | !route add -inet 172.31.1.1 -llinfo -link -static -iface vio0
> | !route add -inet default 172.31.1.1
> |
> | https://www.openbsd.org/faq/upgrade63.html :
> |
> | "... If you need the old style stateless address calculated from the
> | layer 2 address (i.e. ethernet mac address) put -soii into the
> | /etc/hostname.if file. ..."
>
> soii is for stateless autoconfigured (SLAAC) setups. Since you're
> using a static address, then only the link local address is using
> soii.
>
> I just configured a vmm vm with a static v6 address (I default to
> SLAAC (SOII addresses), they work great), and everything works fine.
> Both with a global unicast gateway address and with a link local
> gateway address (i.e. the one with fe80::) set in /etc/mygate.

see "IPv6 broken on Hetzner.de vServer OpenBSD 6.3 / amd64" on bugs@

I'm pretty sure hetzner sets a static route to your link local address for
the /64 they assign to you.

Since the the link local address changes with RFC 7217 you blackhole the /64...

>
> Cheers,
>
> Paul 'WEiRD' de Weerd
>
> --
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> +++++++++++>-]<.>++[<------------>-]<+.--------------.[-]
> http://www.weirdnet.nl/
>

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