Zhongguancun Laboratory China Mobile Tsinghua University Huawei Technologies Zhongguancun Laboratory The SAV rules of existing source address validation (SAV) mechanisms are derived from other core data structures (e.g., FIB-based uRPF) that are not dedicatedly designed for source filtering. Consequently, these mechanisms have limitations in deployable scenarios and traffic handling policies. To overcome these limitations, this document introduces general SAV capabilities from a data plane perspective. How to implement the capabilities and how to generate SAV rules are not in the scope of this document.