Hi,Evgenii
Thank you for your such quick reply. When met the error we added the parameters to the communicationSPI and changed the values several times, but did not take effect, and we forgot deleting them. Now we start to enabling the IPv4Stack on all nodes as your recommendation, but it may not see the result immediately because it always runs OK after restarting. When there is no problem after two days or still same problem, I will let you know and provide full logs if need. Thanks