> Source: [sk102369](https://support.checkpoint.com/results/sk/sk102369)

# sk102369 - Dynamic Routing (e.g., OSPF) does not work on some interfaces in ClusterXL running on Gaia OS

| Property | Value |
|----------|-------|
| Solution ID | sk102369 |
| Date Created | 2014-09-05 |
| Last Modified | 2019-11-07 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * Dynamic Routing (e.g., OSPF) does not work on some interfaces in ClusterXL running on Gaia OS.

* Output of Clish command '`show ospf interfaces`' does not show some interfaces after reboot.

* RouteD trace debug shows lines like these:

  *

    ```
    
    task_ifaddr_change: Starting ifaddr_change of 192.168.1.20(eth0) for task OSPF2_default for instance default
    OSPF: interface 192.168.1.20(eth0) UP
    OSPF:not starting protocol on interface 192.168.1.20(eth0)
    ```

  * `cpcl_add_cxl_addresses(): Router Discovery should not run with Clustering`

## Cause

'`Router Discovery`' is enabled on the problematic interfaces.

IPv6 Router Discovery is not supported on ClusterXL.  
IPv6 Router Discovery can be used only with the VRRP clustering solution, or on single Security Gateway.

## Solution

This solution requires authentication. Please log in to view the full solution.

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