xkcptun
xkcptun is kcp tunnel for OpenWRT&LEDE, implemented in c language
...The project provides client and server components that use KCP-based tunneling to improve performance over unreliable or high-latency network links. It also includes a spy utility, making the generated build more than a minimal two-binary tunnel setup. xkcptun can be built with CMake and supports static linking for easier deployment on constrained systems. It is most relevant to users who need a compact KCP tunnel implementation for routers, gateways, and custom network appliances.