So I posted this on reddit but it was automatically deleted as spam >:(
I’ve started using warp vpn for a bit again and was confused to find whatismyipaddress.com (which is on cf) etc show me a private 172.16* address. Or an fd* private ipv6 address. But not always, it seems for the first request after a while, the site gets my real address as normal, but then requests after that get the mysterious private IPs.
Well they were 172.16 until now I got a 240 one, which is not even for private network but “reserved for future use”. Here you can see two zones, the first one I turned off IPv6.
Now I turned warp off and on again and now, each ipv4 request x-forwarded-for is my real address but the ipv6 is private. So it’s kind-of inconsistent and confusing.
I found this thread that suggests it happens with HTTP/3 connection, which I would have replied to instead but it is closed: Using HTTP/3 w/ Warp on Cloudflare Websites Shows Private IP
That would make sense for some of the inconsistency. But it is really intriguing. Did Cloudflare make a mistake, or are they planning to make Cloudflare WARP a fully anonymous VPN?