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abneru 06-22-2005 10:15 AM
ARP flush
 
Can I flush all my arp entries with one single command instead of doing it one by one using the arp -d command?

david_ross 06-23-2005 12:42 PM
Try using this:
for addr in `arp -n`;do arp -nd $addr;done

It will throw up some errors but it should delete all of the entries.

OS Jockey 08-12-2011 12:54 PM
Another, cleaner way...
 
for i in `awk -F ' ' '{ if ( $1 ~ /[0-9{1,3}].[0-9{1,3}].[0-9{1,3}].[0-9{1,3}]/ ) print $1 }' /proc/net/arp` ; do arp -d $i ; done

barataaway 01-27-2012 12:57 PM
Yes, you can!
 
You could do that (on RHEL, at least) by using "ip" command:

Code:
ip n flush
or

Code:
ip neigh flush
or

Code:
ip neighbour flush

By the way, the IPv4 neighbour table is known as "ARP table".


You could use -statistics option too:

Quote:
Originally Posted by man ip
With the -statistics option, the command (ip n flush) becomes verbose. It prints out the number of deleted neighbours and the number of rounds made to flush the neighbour table.
=)


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