背景 链接到标题 在做节点管理时，经常面临节点自动扫描，自动关联等功能，这时候需要 NDP 来帮助我们来完成，关于 NDP 的实现有几种方式，今天来聊一下这个。 邻居发现协议（NDP） 链接到标题 引用维基百科的介绍： The Neighbor Discovery Protocol (NDP, ND)[1] is a protocol in the Internet protocol suite used with Internet Protocol Version 6 (IPv6). It operates at the link layer of the Internet model (RFC 1122), and is responsible for gathering various information required for internet communication, including the configuration of local connections and the domain name servers and gateways used to communicate with more distant systems.