Adding a static ARP entry in a Virtual System does not survive reboot

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Solution ID	sk106794
Product	VSX, Enterprise Appliances
Version	R75.40VS, R76, R77, R77.10, R77.20, R77.30
OS	Gaia
Platform / Model	2000, 4000, 12000 VSX, 13000, 21000 VSX, IP1280, IP2450, Intel/PC, Power-1, UTM-1, VSX-1
Date Created	10-Jul-2015
Last Modified	26-Jul-2019

Symptoms

Adding a static ARP entry in a Virtual System does not survive reboot:
1. Added a static ARP entry in Gaia Clish:
  HostName:0> set virtual-system <VSID>
  HostName:VSID> add arp static ipv4-address IP_ADDRESS macaddress MAC_ADDRESS
2. Save the changes:
  HostName:VSID> save config
3. Verified that the static ARP entry was saved in Gaia Database:
  [Expert@HostName:VSID]# grep ip:arp:entry:static:instance
4. Verified that the static ARP entry was added to ARP table on Virtual System:
  [Expert@HostName:VSID]# arp -an
5. Rebooted the VSX Gateway.
6. After reboot, ARP table on the Virtual System does not contain the static ARP entry.
/var/log/messages file shows during the boot:
arp_xlate: failed to update the arp with err: 101 Network is unreachable

Cause

Linux kernel might add static ARP entry for the involved network before that network becomes reachable.

Solution

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