This topic

TP Link routers and IPv6

LiamG91Sheff — Thu, 27 Apr 2023 22:42:50 GMT

Does anyone know if the new models of TP Link routers are compatible with BT's IPv6?

Also what other brands of router (new models) are compatible with BT's IPv6?

Thanks.

Re: TP Link routers and IPv6

WSH — Fri, 28 Apr 2023 08:43:30 GMT

I can confirm that the Draytek 2762 is compatible. (Yes, I know you said new models but the implication is that the 2763 and 2765 would be compatible).

Re: TP Link routers and IPv6

Dode — Fri, 28 Apr 2023 09:37:40 GMT

The TPLink VR400 is compatible with IPv6.

Re: TP Link routers and IPv6

LiamG91Sheff — Mon, 01 May 2023 18:33:30 GMT

Thanks for your replies.

Re: TP Link routers and IPv6

Nepomucene — Wed, 29 Nov 2023 15:28:42 GMT

Hello @WSH

Would you mind sharing your IPV6 settings?

I have a 2865, seem to be getting a ipv6 address, but I fail all the available ipv6 tests...

Not sure where the problem lies. DNS? DHCPV6?

Re: TP Link routers and IPv6

WSH — Wed, 29 Nov 2023 16:42:53 GMT

It's changed recently. Having gone over to Digital Voice, I'm now just setting the Draytek as WAN2 and a DHCPv6 client, (of the SH2), in the WAN IPv6 settings. When I was using the Draytek on it's own, prior to DV, it was just the WAN1 IPv6 set as PPP.

Re: TP Link routers and IPv6

WSH — Wed, 29 Nov 2023 16:52:06 GMT

I don't know whether you're aware, but the Draytek update site does demo interfaces for various models. The 2865 F/W 4.3.2 looks the same as the 2762. If you are using it as a direct connection to the internet then it is

The menu on the left Wan > Internet access > IPv6 button > PPP

Re: TP Link routers and IPv6

WSH — Wed, 29 Nov 2023 17:00:28 GMT

Second thing that comes to mind is, Windows 10 temporary addressing is a pain in the butt. It seems to like using a deprecated address which then screws the tests up. Windows 11 seems to have fixed the problem.

Re: TP Link routers and IPv6

Nepomucene — Wed, 29 Nov 2023 17:02:31 GMT

Thanks for that. I already have WAN / Internet connection / IPV6 set as PPP

BT seems to be giving me an ipv6 address:

But tests (https://test-ipv6.com/) show that I am not using it properly?

Not sure of what I'm doing wrong here...

Re: TP Link routers and IPv6

Nepomucene — Wed, 29 Nov 2023 17:04:02 GMT

PS: Tests done on Windows 11, but ipconfig mentions a temp ipv6:

Re: TP Link routers and IPv6

Nepomucene — Wed, 29 Nov 2023 17:09:09 GMT

I suspect the issue is a LAN one, not WAN.

But I'm out of my depth.

I suspect LAN / General Setup / LAN1 IPV6 Setup, but no idea of what this should be set as...

I have tried enabling and disabling the DHCPv6, with and without random/auto IPV6 allocation... But always the same test results

Re: TP Link routers and IPv6

WSH — Wed, 29 Nov 2023 17:17:08 GMT

That doesn't look like the page I used to get using the Draytek native but it might be just the ping detect that's changed. In fact, that page looks a lot like the one I use now, (as a DHCP client of the SH2). If you are going through the SH2 try it as DHCPv6 client and set the SH2 IPv6 config as stateless that way it should just be passing an RA to the Draytek. (Sorry, RA=Router Advertisement).

Re: TP Link routers and IPv6

WSH — Wed, 29 Nov 2023 17:18:37 GMT

Ah, you need to set the O-bit.

Re: TP Link routers and IPv6

Nepomucene — Wed, 29 Nov 2023 17:29:34 GMT

The O-bit ios now ticked.

Tried both PPP & DHCPV6, but still the same results:

PS: Not using the phone anyway, so no impact from DV => Using the Draytrek as modem.

FailOver from USB 4G modem (deactivated for the tests).

IPv4 works perfect

IPv6 seems to be working on WAN, but failing on LAN. Sadly my IPv6 knowledge is poor.
Should my laptop get a fd46:[...] IPv6 address or this is already a symptom of the problem?

Re: TP Link routers and IPv6

WSH — Wed, 29 Nov 2023 17:43:32 GMT

No, it should be getting a global address starting with "2" (or possibly "3"). FD is a ULA (unique local address), the equivalent of an IPv4 private address. (Similar to the local FE address, that it uses within your LAN).

You're not trying to set the address manually are you? It's a stange one. I'll ponder it for a while and let you know if I come up with anything.

Re: TP Link routers and IPv6

Nepomucene — Wed, 29 Nov 2023 18:16:16 GMT

That was my thought.

The Dashboard mentions 2 IPv6 addresses for the WAN connection:
a Global one: 2A00:[...]:15C5/128
a Link one: FE80:[...]:15C5/128

But my laptop gets a local address and a Temp in FD46:[...]

On the WAN side: Removed the Ping detect for now but toggling to test regularly, no effect. Staying on PPP.
Right now, RIpng is not enabled. OK?

On the LAN side: IPv6 is obv enabled.
Will BT serve me a IPV6 DNS or should I use 1.1.1.1's IPv6?
Should the DHCPv6 Server be enabled?
If yes, what settings?

Then should I touch the advanced settings?

Should I touch the RA configuration?

Sorry for all the questions 😄

Re: TP Link routers and IPv6

licquorice — Wed, 29 Nov 2023 18:21:16 GMT

BT do not have IPv6 DNS servers, they use IPv4 servers to serve IPv6 addresses.

Re: TP Link routers and IPv6

WSH — Wed, 29 Nov 2023 19:28:47 GMT

Yours are Cloudflare, I think, but pre DV I used to use Cisco’s OpenDNS and Google’s, on

2620:119:53::53 and 2001:4860:4860::8844 resp.

You could give them a try.

It’s where it’s getting the ULA from that that I don’t get.

Re: TP Link routers and IPv6

Nepomucene — Wed, 29 Nov 2023 19:41:56 GMT

I'll try but I tend to trust Cloudflare/1.1.1.1 more than Google/8.8.8.8...

Re: TP Link routers and IPv6

Nepomucene — Wed, 29 Nov 2023 19:46:05 GMT

Sadly exact same result with BT, Cloudflare or Cisco's...