> Source: [sk173165](https://support.checkpoint.com/results/sk/sk173165)

# sk173165 - Many VPN clients disconnect while Dual Stack (IPv4 & IPv6) with Remote Access VPN is activated

| Property | Value |
|----------|-------|
| Solution ID | sk173165 |
| Date Created | 2021-04-27 |
| Last Modified | 2021-05-02 |
| Technical Level | Advanced |
| Products | Endpoint Security |
| Versions | Cloud, E89.X, E88.X |
| OS | Windows, macOS |

## Symptoms

- Many VPN clients disconnect while Dual Stack (IPv4 and IPv6) is activated.

## Cause

The router does not forward the necessary packets to the client.

## 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
