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-rw-r--r--nixos/modules/tasks/network-interfaces.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixos/modules/tasks/network-interfaces.nix b/nixos/modules/tasks/network-interfaces.nix
index 815523093dd..f9b0eb330bf 100644
--- a/nixos/modules/tasks/network-interfaces.nix
+++ b/nixos/modules/tasks/network-interfaces.nix
@@ -995,7 +995,7 @@ in
       '';
 
     environment.etc."hostid" = mkIf (cfg.hostId != null)
-      { source = pkgs.runCommand "gen-hostid" {} ''
+      { source = pkgs.runCommand "gen-hostid" { preferLocalBuild = true; } ''
           hi="${cfg.hostId}"
           ${if pkgs.stdenv.isBigEndian then ''
             echo -ne "\x''${hi:0:2}\x''${hi:2:2}\x''${hi:4:2}\x''${hi:6:2}" > $out