====== Ubuntu - Networking - ARP - Add an entry in ARP cache Table ======

<code bash>
arp  -s  192.168.1.43  12:48:08:bb:a5:bb
</code>
 

<WRAP important>
Make sure the IP address is a valid one in the above command.
</WRAP>

----

===== Add multiple entries to the ARP cache table at once =====

The **arp** utility supports taking entries from a file.

Simply pass the file path as an argument to arp command.

By default the **/etc/ethers** file is used.  

The file content should look like this:

<file bash>
12:f7:fd:48:aa:79 192.168.1.40
12:48:08:aa:a5:bb 192.168.1.43
</file>

Now you can give the path of the file as argument.

<code bash>
arp -f /etc/ethers
</code>