diff --git a/modules/headless.nix b/modules/headless.nix
index 2cec1de..81d5d92 100644
--- a/modules/headless.nix
+++ b/modules/headless.nix
@@ -23,4 +23,8 @@
   documentation.man.enable = false;
   # Don't install install info pages and the info command.
   documentation.info.enable = false;
+
+  # To enable port forwarding to a headless NixOS server,
+  # we don't want the suffix if its global IPv6 address to change regularly.
+  networking.tempAddresses = "disabled";
 }