> Source: [sk183675](https://support.checkpoint.com/results/sk/sk183675)

# sk183675 - DHCP broadcast packets are not visible on the intended VLAN when working in SecureXL User Mode (UPPAK)

| Property | Value |
|----------|-------|
| Solution ID | sk183675 |
| Date Created | 2025-07-17 |
| Last Modified | 2025-09-14 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R82, R81.20 |
| OS | Gaia |
| Platform | 9000, LightSpeed QLS, LightSpeed MLS, 3900, 19000, 29000 |

## Symptoms

- * DHCP broadcast packets from DHCP Server/DHCP relay are not visible on the intended VLAN when operating in SecureXL User Mode (UPPAK).  
* Broadcast packets from the Security Gateway may be routed to incorrect VLANs when multiple VLANs simultaneously handle broadcast traffic.  
* Affected Appliances/Versions  
  * Quantum Force 19000, 29000, 9000, QLS Lightspeed and MLS Lightspeed appliances operating either in Security Gateway or in Maestro configurations and running SecureXL User Mode (UPPAK):
    * Issue is relevant for Check Point R82
    * Issue is relevant for R81.20 Jumbo Hotfix Accumulator Take 96 and higher
  * Check Point Quantum Force 3900 Appliance
    * Issue is relevant for Check Point Quantum Force 3900 Appliance factory image ([Check Point R82.10 Image for 3900 Appliances](https://support.checkpoint.com/results/download/138048))

  <br />

* In Expert mode, the output of "*fwaccel tab -t nnexthop* " includes rows with the IP address 255.255.255.255.

## Solution

This problem was fixed. The fix is included in:

* [Jumbo Hotfix Accumulator for Quantum Force 3900 Appliances](https://support.checkpoint.com/results/sk/sk183557) starting from Take 22
* [Jumbo Hotfix Accumulator for R82](https://sc1.checkpoint.com/documents/Jumbo_HFA/R82/Default.htm) starting from Take 34
* [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 111

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://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk168597).

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