> Source: [sk185101](https://support.checkpoint.com/results/sk/sk185101)

# sk185101 - TCP packets are not forwarded out of a Bridge interface when SecureXL is on

| Property | Value |
|----------|-------|
| Solution ID | sk185101 |
| Date Created | 2026-07-06 |
| Last Modified | 2026-07-23 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- * TCP connections cannot be established for traffic traversing a bridge interface when SecureXL is enabled.

* ICMP traffic works as expected.

* Packet captures show that after traffic passes through the bridge interface, the VLAN tag is removed, and the destination and source MAC addresses are incorrect.

* TCP connectivity is restored when SecureXL is disabled or after switching SecureXL from UPPAK mode to KPPAK mode.

## Cause

This behavior occurs due to a software condition in the handling of VLAN-tagged traffic in Bridge Mode when SecureXL processes traffic in UPPAK mode.  
This condition affects Medium Path traffic processing, which results in incorrect packet modification.

## Solution

This problem was fixed. The fix is included in:

* [Jumbo Hotfix Accumulator for R82.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R82.10/Default.htm) starting from Take 36

If you choose not to upgrade, Check Point can supply a **Hotfix** . [Contact Check Point Support](https://www.checkpoint.com/support-services/contact-support/) to get a Hotfix for this issue.  
A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.  
For faster resolution and verification, please collect [CPinfo files](http://supportcontent.checkpoint.com/solutions?id=sk92739) from the Security Management Server and Security Gateways involved in the case.

**Hotfix installation instructions:**   
Refer to [sk168597 - How to install a Hotfix](https://support.checkpoint.com/results/sk/sk168597).

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