Does it allow you to leave the prefix name blank? Seems an odd requirement, I would expect it to ask for prefix length, not name. You could try entering /56 if it doesn't allow a blank field.
Edit: typing as @Rob364 posted.
Thanks for that but i have already tried that and it dosent work
No but I am starting to think that box is only a label
I have a RV340 and these settings work.
First don’t expect the IP6 status to show as UP in the <<WAN Settings>>, because of the way BT allocate the addresses it will always show as DOWN. Once finished the only way to check is to use https://ipv6-test.com/ on the web.
I am assuming you have IP4 working OK and if you are going to use Wi-Fi , the AP is compatible with IP4 and IP6, older ones won’t be.
For the IP6 settings set as bellow:
Now to set up the PC
If that all worked you can see if a PC connected to the Wi-Fi AP works, if not check that your AP is IP6 compatible.
This configuration worked for me, only difference is I have 4 VLANs.
Thank you very much for your informative reply and concise instructions.
Yes IP4 working OK
WAPs are ipv6 compatible but at the moment I am using a WIN7 PC straight into a LAN port on the RV340 to eliminate any potential problems with my switch or WAPs.
Your info re the ipv6 wan always showing as 'down' was VERY helpful as I was assuming that it meant what it said and wasn't looking any further!
OK I have followed your instructions to the letter but still have no ipv6 according to the test site.
I am now seeing a WAN ipv6 IP address and default gateway on the RV340 system summary page but no DNS address?
In the PC NIC status I'm seeing an IPv6 local link address but no IPv6 default gateway or IPv6 DNS server address.
I'm now assuming its the LAN side settings at fault? If I turn on DHCP server for IPv6 on the LAN side of the RV340 I get a DNS server box with options of 'use DNS from ISP' 'Use DNS proxy' or ' Use DNS as below' none of these seem to work?
See photos below
Thank you again for your help and sorry for the delay in replying, for some reason I don't get thread update notifications always!
having set the LAN DHCP server to 'on' and selected 'Use DNS proxy' I now see a IPv6 DNS server address in the PC's NIC status page but still no IPv6 default gateway.
Still fails on the test website
BT don't have IPv6 DNS servers currently, just enter your chosen servers manually on the router as shown in message 15. E.g Google 2001:4860:4860::8888 and 2001:4860:4860::8844