I am trying out Cloudflare Gateway on Cloudflare Teams for my home network. I’ve set up the DNS issued on my home gateway to point to the Cloudflare Gateway DNS servers as per the instructions for both IPv4 and IPv6.
The IPv4 DNS queries are sent to a local location in Australia, and return DNS queries as if in Australia - eg CDN addresses.
However IPv6 DNS routes to a location in the US, and returns DNS queries as if outside Australia. For example, AWS Cloudfront IP addresses returned for a domain name are in the US.
So not only are the IPv6 DNS queries slow due to the high latency, it also returns CDN locations that are far away to make latency even worse! There are no issues if using the general Cloudflare IPv6 DNS addresses with local routing and local addresses returned.
I haven’t put my IPv6 DNS address in here as it’s personal to me. ISP is Telstra NBN. It’s like the DNS IPv6 address isn’t advertised locally or not accepted. Odd because the reverse happens elsewhere for some CloudFlare services and Telstra (IPv6 good, IPv4 not).
Seems really odd wish I had known this was happening sooner, any service on IPv6 is going to really suffer.