Are Symantec Endpoint Encryption versions 11 and later supported in an IPv6 environment?

Yes, from Symantec Endpoint Encryption version 11.0.1 and above support IPv6 environments:

• Symantec Endpoint Encryption Management Server
  
  
• Symantec Endpoint Encryption Manager
  
  
• Symantec Endpoint Encryption Client
  
  • Drive Encryption
  • Removable Media Encryption
  • Symantec Endpoint Encryption for BitLocker (added in version 11.1.0)
     

There is no configuration needed in order to enable IPv6 support and is a seamless operation.

EPG-33737