COLTP-209675：如果TCP流量控制中存在S3连接、则会阻止LIF迁移

问题描述

When a network client using encrypted S3 connections stops reading responses from the S3 server
This will block the migration of any LIF being used by such connections.
For example, a LIF migration attempted by ANDU would result in the following error message:
[ANDU paused Error: Failed to migrate data LIFs from node "NODE"]
Use the following diagnostic mode command, where <IP> is the IP address of the LIF in question, to determine if there are any stopped S3 connections:
[systemshell * -command "netstat -an | grep <IP>\\.443"] - A stopped connection can be identified as one having a zero value in the final column (TCP send window). - The third column (untransmitted data) of a stopped connection will show a large non-zero value.
If there are no such connections, then the LIF migration failure is not due to this issue.