> Source: [sk174607](https://support.checkpoint.com/results/sk/sk174607)

# sk174607 - Traffic issues/drops

| Property | Value |
|----------|-------|
| Solution ID | sk174607 |
| Date Created | 2021-07-22 |
| Last Modified | 2022-11-24 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R81 (EOS) |

## Symptoms

- * All traffic is dropped when you install the policy.

* The */var/log/messages* file contain a log similar to this:  

  `"[SIM4];pkt_handle_f2v_if_needed: dropping packet (failed to send notification), conn: `".

## Cause

Several lock connections occur during policy installation that cause packets to stall for three seconds.

## Solution

Run these commands:  

1. Run this command:   
   `#fw ctl set int simi_reorder_hold_udp_on_f2v 1 -a`  

2. Push policy and make sure that the issue was resolved.  

3. If the issue was resolved:
   1. Run this command:  
      `#vi $PPKDIR/conf/simkern.conf`
   2. Add a new line.
   3. Copy and paste this to the new line:   
      `simi_reorder_hold_udp_on_f2v=1`

If the problem is not fixed with the above commands, the fix is included in:

* [Jumbo Hotfix Accumulator for R81](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk170114) starting from Take 34
* [Jumbo Hotfix Accumulator for R80.40](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk165456) starting from Take 114
* [Jumbo Hotfix Accumulator for R80.30](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk153152) starting from Take 235
* [Jumbo Hotfix Accumulator for R80.20](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk137592) starting from Take 202

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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