UCloud Tech

Mar 21, 2019 · Cloud Native

How Kernel Innovations Enable Scalable Multi‑Tenant Cloud Gateways

UCloud’s external gateway redesign leverages Linux kernel 5.0 features—lightweight tunneling, VRF, and flow offload—to replace OVS/GRE tunnels, addressing IP tunnel complexity, tenant isolation overhead, and netns performance penalties, while contributing patches back to the open‑source community.