On 2017/06/22 14:13, Marc Peters wrote:
> Hi,
>
> i have a server at the german hosting provider Hetzner. They provide
> IPv6. You get a /64 assigned for your host. The problem is, that IPv6
> doesn't work right after a reboot, but you have to ping the gateway
> first and after that, everything works as expected. For that i have a
> line in roots crontab:
>
> @reboot sleep 10 && ping6 -c 10 fe80::1\%em0 > /dev/null
How are your PF rules? Do they allow NDP packets to pass? If you're
unsure, I would try "pass log inet6 proto icmp6" or similar.
(this might be a bit of a surprise if used to IPv4 where address
resolution is done by a separate protocol that PF doesn't block).
> mpi@ suggested to stop working around this and fixing it. He asked for
> the output of the routing table before pinging the gateway without IPv6
> access and after pinging the gateway with working IPv6.
This is the main difference between them:
-fe80::1%em0 link#1 UHLch 1
2 - 3 em0
+fe80::1%em0 cc:e1:7f:07:e0:88 UHLch 1
9 - 3 em0
