[IPv6 DNS] not configurable

I have tried the same thing manual DNS setup does nothing. In my case the IPv6 DNS names are displayed in the network configuration (even though I am configuring IPv4) and there is no way to change them. I have setup IPv4 manually but the DNS is still
taking DHCP IPv6.

The DNS information is coming from the DHCP server. Whether this is relayed, or local, that I don't know, but let's assume it's local. I would then assume your router gateway is IPv6 configured and your console request IPv6 information over IPv4 information.

Only way to get around it for now that I know of - don't direct connect to your cable modem but instead place a router capable of working with IPV4 and IPV6 and then change the DNS settings for the WAN ports there.

I have comcast myself and yes their IPV6 DNS servers are not ready for prime time. Test performed using theirs mostly fail, while using googles Public iPV6 DNS servers always pass.

So, what I did - though the router will receive it's Public IP's (IPV4 and IPV6) and the DNS Servers to use. I instead changed the DNS settings from Auto to Manual - Manually adding Googles DNS Servers for both IPV4 and IPV6 but leaving the Actual Addressing
set to auto for both IPV4 and IPV6.

Thus: Anything DHCPing from my router (which acts as a DNS Forwarder) will receive and IP Address for my network along with the Routers IP Address as the DNS Server. Noted on my XBOX ONE that my Primary DNS Server is in an IPV6 Format and it's set to my
Routers Local IP Address. So what happens now AND DNS Requests will now pass DNS thru the router to what it was told to use as DNS servers which are now Googles Public DNS servers for both IPV4 and IPV6.

Problem solved.

Hi guys,

Thanks for the responses, managed to fix it.

My router had assigned my Xbox One a IPv6 primary DNS even though the router itself had IPv6 connections disabled. I was unable to change the DNS setting on the console as it kept reverting to the IPv6 DNS so had to go into my router using TelNet and make
a few changes using that to redisable the IPv6.

Xbox One now has the IPv4 DNS servers and is now working much quicker.

I've got IPV6 DNS and never get disconnected while online gaming. I think it would not work at all if it really came from ipv6 dns issue. Your disconnects should come from elsewhere?