diff --git a/nixbld-etc-nixos/configuration.nix b/nixbld-etc-nixos/configuration.nix
index b9cefcc..e0325d0 100644
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
@@ -272,6 +272,11 @@ in
       start_action = "start";
     };
   };
+  # prevent race condition similar to https://github.com/NixOS/nixpkgs/issues/27070
+  systemd.services.strongswan-swanctl = {
+    after = [ "network-addresses-alt0.service" ];
+    requires = [ "network-addresses-alt0.service" ];
+  };
 
   systemd.services.network-custom-route-backup = {
     wantedBy = [ "network.target" ];