You can enable IPv6 support on a computer after installing Commvault software on it.
Note
You must perform these steps on each computer in a CommCell group.
Procedure
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From the CommCell Browser, expand Client Computers. 
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Right-click the client > Properties > Advanced. 
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Click the Additional Settings tab, and then click Add. 
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In the Name field, type nPreferredIPFamily. 
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In the Value field, enter one of the following values: - 
0 for both IPv4 and IPv6 support 
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1 for IPv4 support only 
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2 for only IPv6 support only 
 
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Click OK. 
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Restart the Commvault services.