ip-neighbour: add page

pages/linux/ip-neighbor.md

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+# ip-neighbor
+
+> Neighbor/ARP tables management ip subcommand.
+> More information: <https://manned.org/ip-neighbour.8>.
+
+- Display the neighbor/ARP table entries:
+
+`ip neighbor`
+
+- Remove entries in the neighbor table on device `eth0`:
+
+`sudo ip neighbor flush dev {{eth0}}`
+
+- Perform a neighbor lookup and return a neighbor entry:
+
+`ip neighbor get {{lookup_ip}} dev {{eth0}}`
+
+- Add or delete an ARP entry for the neighbour IP address to `eth0`:
+
+`sudo ip neighbor {{add|del}} {{ip_address}} lladdr {{mac_address}} dev {{eth0}} nud reachable`
+
+- Change or replace an ARP entry for the neighbor IP address to `eth0`:
+
+`sudo ip neighbor {{change|replace}} {{ip_address}} lladdr {{new_mac_address}} dev {{eth0}}`