# Security Gateway in the Bridge Mode, with SecureXL in the UPPAK mode, drops on IPX / Ixia monitor connections

**Product**: SecureXL  
**Version**: R81.20  
**OS**: Gaia  
**Last Modified**: 2025-02-26

## Symptoms

- IPX / Ixia monitor connections do not pass through a Security Gateway in the Bridge Mode.
- Kernel debug on the Security Gateway (`fw ctl zdebug + drop`) shows that IPX traffic (protocol 0x8137) is dropped.  
  Example:  
  ```  
  [ADP];adp_netfilter_brin: Ethtype 0x8137 not recognized (skb->protocol=0x8137) Bridge packet received on interface eth1-02(26) (unsupported feature) (DROP);  
  ```  
- Following [sk101371](https://support.checkpoint.com/results/sk/sk101371) to set the value of the `"fwaccept_unknown_protocol"` parameter to 1 does not resolve the issue.
- Changing the SecureXL mode on the Security Gateway from UPPAK to KPPAK and rebooting resolves the issue.

## Solution

This problem was fixed. The fix is included starting from:

- [Check Point Quantum R82](https://support.checkpoint.com/results/sk/sk181127)  
- [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 90

Check Point recommends to always upgrade to the most recent version  
([upgrade Security Gateway](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=overview&product=435) / [upgrade Security Management Server](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=overview&product=184) / [upgrade Multi-Domain Security Management](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=overview&product=166)).

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).

#### NOTE
This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.

## Article Properties
**Access Level**: General  
**Status**: Approved by TAC  
**Date Created**: 2024-08-26  
**Last Modified**: 2025-02-26