Chapter 8. Neighbor Discovery

Table of Contents

1. Displaying neighbors using “ip”
2. Manipulating neighbors table using “ip”
2.1. Manually add an entry
2.2. Manually delete an entry
2.3. More advanced settings

Neighbor discovery was the IPv6 successor for the ARP (Address Resolution Protocol) in IPv4. You can retrieve information about the current neighbors, in addition you can set and delete entries. The kernel keeps tracking of successful neighbor detection (like ARP in IPv4). You can dig into the learnt table using “ip”.