ARP

Current arp cache
==============
root@server [~]# arp -n
Address      HWtype  HWaddress           Flags Mask  Iface
70.167.140.1 ether   00:00:0C:9F:F0:04   C           eth0

Clearing arp cache with verbose
======================
root@server [~]# ip -s -s neigh flush all
70.167.140.1 dev eth0 lladdr 00:00:0c:9f:f0:04 ref 42 used 17/0/65 REACHABLE
*** Round 1, deleting 1 entries ***
70.167.140.1 dev eth0  ref 42 used 0/0/0 INCOMPLETE
*** Round 2, deleting 1 entries ***
*** Flush is complete after 2 rounds ***

Current entries
============
root@server [~]# arp -n
Address      HWtype  HWaddress           Flags Mask  Iface
69.167.140.1 ether   00:00:0C:9F:F0:04   C           eth0

Delete specific arp entries
==================
root@server [~]# arp -d 192.168.1.1
root@server [~]# arp -d 192.168.1.2

Add a static arp entry
===================
root@server [~]# arp -s 192.168.1.10 00:00:93:12:04:57