Two months since welcoming WiFi software stalwart Airties as a new member, the venerable open source networking consortium the prpl Foundation has scratched support for RDK-Broadband devices from its latest API release – hitting WiFi management rival Plume where it hurts. The prpl Foundation’s just-released High-Level API (HL-API) certification program means that CPE running the prplOS will interoperate with device management systems (such as those from Airties), as well as application ecosystems in gateways, which – the prpl Foundation notes – are in high-demand. This means devices running the RDK-B open source framework, backed by the might of Comcast which owns a stake in Plume, will not interoperate with the HL-API which is designed to reduce customization time and effort…