diff --git a/doc/settings/environment-variables.md b/doc/settings/environment-variables.md
index 4a978ca7b82e0fa0353e759820c5dbd9f3a133d3_ZG9jL3NldHRpbmdzL2Vudmlyb25tZW50LXZhcmlhYmxlcy5tZA==..fc6241cf05bca9b5385aa3c932ca4a96c33b2ca0_ZG9jL3NldHRpbmdzL2Vudmlyb25tZW50LXZhcmlhYmxlcy5tZA== 100644
--- a/doc/settings/environment-variables.md
+++ b/doc/settings/environment-variables.md
@@ -59,6 +59,10 @@
 the `https_proxy` value, you should usually specify a value as
 `http://USERNAME:PASSWORD@example.com:8080`.
 
+NOTE:
+DNS rebind protection is disabled when either the HTTP_PROXY or the HTTPS_PROXY environment variable is set,
+and the domain DNS can't be resolved.
+
 ## Applying the changes
 
 Any change made to the environment variables requires a reconfigure for it