> Source: [sk106709](https://support.checkpoint.com/results/sk/sk106709)

# sk106709 - SecureXL instability when SecureXL NAT Templates are enabled and Hide NAT is configured on VSX

| Property | Value |
|----------|-------|
| Solution ID | sk106709 |
| Date Created | 2015-07-02 |
| Last Modified | 2017-05-17 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- SecureXL instability when SecureXL NAT Templates are enabled and Hide NAT is configured on VSX:

* Connectivity issues might occur after policy installation   

* VSX Gateway might randomly reboot   

* VSX Gateway might randomly crash with core dump files that contain the following function stacks:

  *

    ```
    
    simi_dbg_panic
    simi_mem_free
    free_conn
    htab_delete_all
    htab_destroy
    sim_db_fini
    cphwd_api_stop
    cphwd_api_stop_
    fwkdrv_fini_vs
    ```

  *

    ```
    
    simi_dbg_panic
    free_tmpl_conn
    htab_delete_all
    htab_destroy
    sim_db_fini
    cphwd_api_stop
    cphwd_api_stop_
    fwkdrv_fini_vs
    ```

  *

    ```
    
    htab_delete_all
    htab_destroy
    erdos_fini
    cphwd_api_stop
    cphwd_api_stop_
    stop_acceleration_on_instance
    cphwd_disable_acceleration
    cphwd_disable_acceleration_wait
    fwmultik_atomload_run_ex
    ```

## Cause

Partial connections offloaded from FireWall might collide with existing connections.

## Solution

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