eBPF, a technology allowing sandboxed programs to run within an operating system kernel, has generated significant interest for its potential to transform the service mesh landscape, particularly through a sidecarless model that could address complexity and overhead issues. While Isovalent and Istio have proposed using eBPF to streamline the service mesh by introducing node-level proxies, this shift has sparked debates over security, with critics like William Morgan emphasizing the importance of maintaining security by limiting proxy failures to individual application instances. Despite the security concerns, eBPF is seen as a promising tool for enhancing the service mesh by reducing latency and improving observability, with proponents suggesting it can work alongside traditional sidecar models rather than replace them entirely. As service mesh adoption grows, the ongoing discussions and innovations around eBPF illustrate the collaborative efforts to refine and expand the capabilities of this technology in managing microservices.