> Source: [sk101907](https://support.checkpoint.com/results/sk/sk101907)

# sk101907 - Proxy ARP entries for Automatic NAT rules not written to ARP table on VRRP Cluster

| Property | Value |
|----------|-------|
| Solution ID | sk101907 |
| Date Created | 2014-08-04 |
| Last Modified | 2017-09-23 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * Proxy ARP entries for Automatic NAT rules not written to ARP table on VRRP Cluster.

* Debug of FWD daemon (per [sk86321](http://supportcontent.checkpoint.com/solutions?id=sk86321)) shows:

  `
  fwarp_get_arp_interface: no interface found on same subnet as valid ip address: [ip address]`  
  `
  fwarp_make_arp_entry: can't find arp interface for address: [ip address]
  `
* Detailed debugs show the interface is read from the file, but still is not matched.

## Solution

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

---

# Agent Instructions

This content is from the Check Point Support Center (https://support.checkpoint.com), the official knowledge base for Check Point cybersecurity products.

## Navigating This Knowledge Base

- **Complete index**: [llms.txt](https://support.checkpoint.com/llms.txt)
- **All SK articles**: [SecureKnowledge Sitemap](https://support.checkpoint.com/sitemaps/secureknowledge-sitemap-index.xml)
- **SK article URL pattern**: `https://support.checkpoint.com/results/sk/{skId}`
- **Markdown responses**: AI bot User-Agents automatically receive `text/markdown` content