IgdControl
data class IgdControl(val controlUrl: String, val serviceType: String, val modelName: String? = null)
A resolved IGD control endpoint: the absolute SOAP control URL and the service type (WANIPConnection/WANPPPConnection) to use as the SOAP namespace and SOAPAction prefix. The engine caches this after Upnp.discoverIgd / Upnp.describe.