Why does entries disappear from ARP tables after some time in RHEL?

Solution Verified - Updated -

Issue

  • The ARP output seems like it's not caching:
[root@server eth0]# arp -a
? (172.0.0.1) at 00:01:02:03:04:05 [ether] on bond0
[root@server eth0]#

Environment

  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

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