> Source: [sk112175](https://support.checkpoint.com/results/sk/sk112175)

# sk112175 - Unable to ping ClusterXL IPv6 Virtual IP (VIP) 

| Property | Value |
|----------|-------|
| Solution ID | sk112175 |
| Date Created | 2016-07-05 |
| Last Modified | 2024-02-13 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R81.20, R81.10 (EOS), R81 (EOS) |
| OS | Gaia |

## Symptoms

- * Unable to ping the CLusterXL IPv6 VIP.  
* The IPv6 interface of the Active member responds 8 times and times out 6 times. The ipv6 interface of the Standby cluster member has no problems processing the ping6 and replies all the time.

## Cause

There is no possibility to define IPv6 only on any interface of the ClusterXL. You must define a corresponding IPv4 address for every IPv6 address

Please refer to [R77 ClusterXL Administration Guide](https://sc1.checkpoint.com/documents/R77/CP_R77_ClusterXL_WebAdminGuide/html_frameset.htm) for more information about configuration of IPv6 on Cluster interfaces

## Solution

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

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