> Source: [sk180993](https://support.checkpoint.com/results/sk/sk180993)

# sk180993 - Broadcast storm may occur on Virtual Systems running in Bridge mode (IPv4/IPv6)

| Property | Value |
|----------|-------|
| Solution ID | sk180993 |
| Date Created | 2023-05-17 |
| Last Modified | 2025-06-23 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R81.20, R81.10 (EOS) |
| OS | Gaia |

## Symptoms

- * Broadcast ARP Storm can be seen after rebooting the Standby VSX member.
* IPv6 network solicitation flood can be seen after rebooting the Standby VSX member.
* IPv6 network solicitation flood can be seen after "cpstop/cpstart" on the Standby VSX member.
* High CPU is utilized on FWK instances.

## Cause

IPv4 and IPv6 forwarding is enabled before the Bridge mode VS policy is enforced.  
This causes broadcast traffic to pass through the Standby member, causing a loop and high CPU.

## Solution

This problem was fixed. The fix is included in:

* [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 177

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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