Where, in memory, does the ARP cache exist? I tried searching it up online but didn't find anything.
GNU/Linux, unlike MacOSx, uses the
/proc directory structure, a.k.a.
procfs, to store system data. The
arp cache is located at
/proc/net/arp You print the data to
stdout directly from that system file via:
I realized that you may also want the memory address that the kernel uses to find the arp cache. The exact address may vary. However, you can find the memory address table for all arp memory addresses the kernel uses in
cat /proc/kallsyms |grep arp_
May be helpful as well.