Draytek 2860 not routing IPv6

Quartz · 23 Apr 2017 at 20:54

My Draytek 2860 doesn't seem to be routing IPv6. It has an external IPv6 address and an internal one, and I can ping the internal address but not the external one. I get 'Destination host unreachable', and 'General failure' when pinging external sites either by name or by IPv6 address. Further, when I try the Ping diagnosis from this configuration guide, I get a message saying 'WAN1 is not online!', but if I ping through Auto, it works. The Online status screen shows I am getting an external IPv6 address (starting 2A00).

My ISP is BT (Infinity)

Per this thread, IPv6 is set to PPP. The router is the default gateway for IPv6.

I believe I've got a misconfiguration somewhere. But where?

Caged · 23 Apr 2017 at 21:08

What does the IPv6 address that your client gets allocated start with?

Quartz · 23 Apr 2017 at 23:13

Caged said:
What does the IPv6 address that your client gets allocated start with?

fe80::9c92:7422:baff:71d0

Note that I can ping internally, just not externally.

Caged · 23 Apr 2017 at 23:51

Yeah, fe80 is a link-local address so you won't be able to get outside with that. Have you told the router to advertise the /64 onto your LAN?

http://www.draytek.com/?a=resource/update&action=post/update&id=1880

Quartz · 24 Apr 2017 at 00:25

That's cracked it. I had DHCP enabled but management was set to DHCPv6. I changed it to SLAAC, renewed the IP addresses, and it's now working.