{ ... }: {
  systemd.network = {
    networks."10-lan" = {
      # IPv4 settings are from `sudo dhcpcd --test`.
      # IPv6 settings are from https://www.ssdvps.dk/knowledgebase/18/IPv6-Gateway.html.
      name = "ens3";
      address = [
        "91.210.59.57/25"
        "2a0d:3e83:1:b284::1/64"
      ];
      routes = [
        { routeConfig = { Gateway = "91.210.59.1"; }; }
        { routeConfig = { Gateway = "2a0d:3e83:1::1"; GatewayOnLink = true; }; }
      ];
    };
  };
}