diff --git a/modules/programs/ssh.nix b/modules/programs/ssh.nix
index 5c4b8c3a9a1..123ef3c0256 100644
--- a/modules/programs/ssh.nix
+++ b/modules/programs/ssh.nix
@@ -42,6 +42,7 @@ in
       [ { # SSH configuration.  Slight duplication of the sshd_config
           # generation in the sshd service.
           source = pkgs.writeText "ssh_config" ''
+            AddressFamily ${if config.networking.enableIPv6 then "any" else "inet"}
             ${optionalString cfg.setXAuthLocation ''
               XAuthLocation ${pkgs.xorg.xauth}/bin/xauth
             ''}