> Source: [sk106794](https://support.checkpoint.com/results/sk/sk106794)

# sk106794 - Adding a static ARP entry in a Virtual System does not survive reboot

| Property | Value |
|----------|-------|
| Solution ID | sk106794 |
| Date Created | 2015-07-10 |
| Last Modified | 2019-07-26 |
| Technical Level | Advanced |
| Products | Security Gateway, Hardware |
| Versions | R82.10, R82, R81.20, Not Version-Specific |
| OS | Gaia |
| Platform | 3000 |

## 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

This solution requires authentication. Please log in to view the full solution.

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