nixos/routing-common: Fix mstpd missing bridge-stp script

nixos/boxes/home/routing-common/dns_update.py

@@ -33,7 +33,7 @@ def main():
 
     print(f'Updating {args.record} -> {address}')
     cf.dns.records.edit(
-        zone_id=zone.id, dns_record_id=record.id, name=args.record,
+        zone_id=zone.id, dns_record_id=record.id, name=args.record, ttl=60,
         type='A', content=address)
 
 if __name__ == '__main__':

nixos/boxes/home/routing-common/mstpd.nix

@@ -3,11 +3,14 @@ let
   # TODO: Move into nixpkgs
   mstpd = pkgs.mstpd.overrideAttrs {
     patches = [ ./mstpd.patch ];
+    # Delete postInstall since it nukes the bridge-stp script we need
+    postInstall = "";
   };
 in
 {
   environment = {
     systemPackages = [
+      # For kernel to call bridge-stp (see ./pkgs/os-specific/linux/kernel/bridge-stp-helper.patch)
       mstpd
     ];
     etc = {
@@ -39,8 +42,8 @@ in
         before = [ "network-pre.target" ];
         serviceConfig = {
           Type = "forking";
-          ExecStart = "${mstpd}/sbin/bridge-stp restart";
-          ExecReload = "${mstpd}/sbin/bridge-stp restart_config";
+          ExecStart = "${mstpd}/bin/bridge-stp restart";
+          ExecReload = "${mstpd}/bin/bridge-stp restart_config";
           PIDFile = "/run/mstpd.pid";
           Restart = "always";
           PrivateTmp = true;