Possible multiple X-Forwarded-For headers

NMP behind another reverse proxy can multiply X-Forwarded-For headers. $proxy_add_x_forwarded_for equals to $remote_addr if this header not present in client request 
https://nginx.org/en/docs/http/ngx_http_proxy_module.html#var_proxy_add_x_forwarded_for
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lakkeri 2022-11-05 16:24:12 +03:00 committed by GitHub
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commit 052cb8f12d
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@ -2,7 +2,7 @@ add_header X-Served-By $host;
proxy_set_header Host $host; proxy_set_header Host $host;
proxy_set_header X-Forwarded-Scheme $scheme; proxy_set_header X-Forwarded-Scheme $scheme;
proxy_set_header X-Forwarded-Proto $scheme; proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-For $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Real-IP $remote_addr;
proxy_pass $forward_scheme://$server:$port$request_uri; proxy_pass $forward_scheme://$server:$port$request_uri;