nginx: client address headers only from $remote_addr (realip). X-Forwarded-For was appended to and CF-Connecting-IP passed through from the client, so a request reaching the origin without Cloudflare (DNS-only host or the bare IP) chose the address the service bans and rate-limits by

ddiff --git a/deploy/nginx/openvibe.live-chat.locations.conf b/deploy/nginx/openvibe.live-chat.locations.conf
iindex 004f5a3..c4e9cf2 100644
---- a/deploy/nginx/openvibe.live-chat.locations.conf
++++ b/deploy/nginx/openvibe.live-chat.locations.conf
@@@ -15,9 +15,9 @@ location ^~ /ws/chat {
      proxy_http_version 1.1;
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
--    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
++    proxy_set_header X-Forwarded-For $remote_addr;
++    proxy_set_header CF-Connecting-IP $remote_addr;
      proxy_set_header X-Forwarded-Proto $scheme;
--    proxy_set_header CF-Connecting-IP $http_cf_connecting_ip;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "upgrade";
  }
@@@ -29,7 +29,8 @@ location ^~ /api/chat/ {
      proxy_http_version 1.1;
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
--    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
++    proxy_set_header X-Forwarded-For $remote_addr;
++    proxy_set_header CF-Connecting-IP $remote_addr;
      proxy_set_header X-Forwarded-Proto $scheme;
  }
  
@@@ -40,7 +41,8 @@ location ^~ /api/dm/ {
      proxy_http_version 1.1;
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
--    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
++    proxy_set_header X-Forwarded-For $remote_addr;
++    proxy_set_header CF-Connecting-IP $remote_addr;
      proxy_set_header X-Forwarded-Proto $scheme;
  }
  
@@@ -51,7 +53,8 @@ location ^~ /api/tts/ {
      proxy_http_version 1.1;
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
--    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
++    proxy_set_header X-Forwarded-For $remote_addr;
++    proxy_set_header CF-Connecting-IP $remote_addr;
      proxy_set_header X-Forwarded-Proto $scheme;
  }
  
@@@ -63,7 +66,8 @@ location = /api/sounds {
      proxy_http_version 1.1;
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
--    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
++    proxy_set_header X-Forwarded-For $remote_addr;
++    proxy_set_header CF-Connecting-IP $remote_addr;
      proxy_set_header X-Forwarded-Proto $scheme;
  }
  
@@@ -74,6 +78,7 @@ location ^~ /api/sounds/ {
      proxy_http_version 1.1;
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
--    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
++    proxy_set_header X-Forwarded-For $remote_addr;
++    proxy_set_header CF-Connecting-IP $remote_addr;
      proxy_set_header X-Forwarded-Proto $scheme;
  }