taskLernsoftware Filius - Tasks: task #15603, Command arp with parameters

 
 

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task #15603: Command arp with parameters

Submitter:  Stefan Freischlad <sfreischlad>
Submitted:  Sat 25 Apr 2020 04:15:46 PM UTC
   
 
Should Start On:  Fri 24 Apr 2020 10:00:00 PM UTC Should be Finished on:  Fri 24 Apr 2020 10:00:00 PM UTC
Category:  None Priority:  5 - Normal
Status:  None Privacy:  Public
Assigned to:  None Percent Complete:  0%
Open/Closed:  Open Effort:  0.00

Sat 25 Apr 2020 04:15:46 PM UTC, original submission:  

The command arp should support more modes.

arp  -d  address  will  delete  a ARP table entry. Root or netadmin privilege is required to do this. The entry is found by IP address. If a hostname is given, it will be resolved before looking up the entry in the ARP table.

arp -s address hw_addr
is used to set up a new table entry. The format of the hw_addr parameter is dependent on the hardware class, but for most classes one can assume that the usual  presentation  can be  used.   For  the Ethernet class, this is 6 bytes in hexadecimal, separated by colons. When adding proxy arp entries (that is those with the publish flag set) a netmask may be specified to proxy arp for entire subnets. This is not good practice, but is supported by older kernels because it can be useful. If the temp flag is not supplied entries will be permanent stored into the ARP cache. To  simplify setting up entries for one of your own network interfaces, you can use the arp -Ds address ifname form. In that case the hardware address is taken from the interface with the specified name.

Stefan Freischlad <sfreischlad>
Group administrator

 

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