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