Class name not accepted: java.net.Inet6Address error received when viewing Agent Management page in Aria Operations for Logs

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

• When attempting to view deployed Agents within the Agent Management page in Aria Operations for logs, you may receive the following error message along with the agents not being visible: Class name not accepted: java.net.Inet6Address
  
  
• The log /storage/core/loginsight/var/ui_runtime.log contains entries similar to the following:
  
  [2025-10-09 14:42:11.933+0000] ["https-openssl-apr-443-exec-6"/##.##.##.## ERROR] [com.vmware.loginsight.web.actions.settings.AgentsActionBean] [Failed to load agent data] org.apache.commons.lang3.SerializationException: java.io.InvalidClassException: Class name not accepted: java.net.Inet6Address at com.vmware.loginsight.commons.SerializationUtil.deserializeSecure(SerializationUtil.java:55) ~[commons-lib.jar:?]

Caused by: java.io.InvalidClassException: Class name not accepted: java.net.Inet6Address
 at org.apache.commons.io.serialization.ValidatingObjectInputStream.invalidClassNameFound(ValidatingObjectInputStream.java:95) ~[commons-io-2.8.0.jar:2.8.0]


• Aria Operations for Logs agents are not configured to use IPv6

Environment

Aria Operations for Logs 8.18.x

Cause

This issue can be caused by a misconfiguration with the ipv6.disable setting in the /boot/photon.cfg file.
This setting is used to enable or disable ipv6 at the kernel level.

Resolution

Engineering is aware of this issue and it will be resolved in Aria Operations 8.18.6. 

 

Workaround:

1. Add the following line to /boot/photon.cfg file on each node in the Aria Operations for Logs cluster:

ipv6.disable=1
   
   
2. Reboot each node after making this change.

 

Additional Information

Additional guidance on disabling ipv6 can be found by referencing the following article: Disable ipv6 in Aria operation for logs

You will also need to disable IPv6 on the Agent server as well