System registration fails with error HTTPConnectionPool(host='169.xxx.xxx.xxx', port=80): Read timed out. (read timeout=10.0)

Issue

• System registration fails with below error for the VMs running on Microsoft Hyper-V host.

  # subscription-manager register
  Registering to: subscription.rhsm.redhat.com:443/subscription
  Username: <login-id>
  Password: 
  Network error, unable to connect to server. Please see /var/log/rhsm/rhsm.log for more information.
  

  # cat /var/log/rhsm/rhsm.log
  2022-04-20 13:18:43,237 [ERROR] subscription-manager:9123:MainThread @managercli.py:218 - Error during registration: HTTPConnectionPool(host='169.xxx.xxx.xxx', port=80): Read timed out. (read timeout=10.0)
  2022-04-20 13:18:43,237 [ERROR] subscription-manager:9123:MainThread @managercli.py:219 - HTTPConnectionPool(host='169.xxx.xxx.xxx', port=80): Read timed out. (read timeout=10.0)