Strange IP proxied from Cloudflare

I’ve got with proxy real client ip
I do the configuration:

real_ip_header X-Forwarded-For;
real_ip_recursive on;
proxy_set_header X-Real-IP $http_cf_connecting_ip;
proxy_set_header X-Forwarded-For $http_x_forwarded_for;

with set_real_ip_from and all trusted cloduflare ips

Everything works fine but sometimes i get strange string in my client ips:

2a01:110f:e07:8000:61c2:94eb:4ad3:a744
or
2a01:4f8:11d:300:7dc3:334b:9435:1a06
etc.

Can you tell me what is it and why I get those strings

Hey,

Those are IPv6 clients, if you don’t want to get those, you can either deactivate IPV6 compatibility in the network tab or activate the pseudo IPv4 in the same tab.

Right …
Thank you very much!!

Kind Regards
mFind

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