Desktop/NetworkManager: change dhcp implementation

roles/desktop/services/networkmanager.nix

@@ -10,6 +10,8 @@ in {
   };
   networking.networkmanager = {
     enable = true;
+    # Internal dhcp implementation does not like my isp router
+    dhcp = "dhcpcd";
     unmanaged = [
       "interface-name:${tailscaleName}"
     ];