Can’t start SubAgent SNMP with AE 12.2.0 with Error is : 97 - Address family not supported by protocol.

Document ID : KB000112765
Last Modified Date : 20/09/2018
Show Technical Document Details
Issue:
Can’t start SubAgent SNMP with AE 12.2.0 with Error
Create and open stream on port 7777. 
97 - Address family not supported by protocol 
Exiting agent.
Environment:
Automation Engine 12.2.0
Redhat 7.6
Resolution:
This issue is a bug. 
- Permanent fix be will released in the near future:
Automation Engine 12.2.1 - Planned Release: 2018-10-23 
Automation Engine 12.3.0 - Planned Release: 2019-02-28 
- Workaround: enable IPv6 in Redhat OS and try to start the agent again.