Summaries and Symptoms

This patch resolves the following issues:

• After you upgrade from ESXi 5.x to ESXi 6.0, you might encounter the following issues:
  
  

  • The ESXi 6.0 host might randomly lose network connectivity
    
    
  • The ESXi 6.0 host becomes non-responsive and unmanageable until reboot
    
    
  • After reboot, the issue is temporarily resolved for a period of time, but occurs again after a random interval
    
    
  • Transmit timeouts are often logged by the NETDEV WATCHDOG service in the ESXi host. You may see entries similar to the following in the /var/log/vmkernel.log file:
    
    cpu0:33245)WARNING: LinNet: netdev_watchdog:3678: NETDEV WATCHDOG: vmnic0: transmit timed out
    cpu0:33245)WARNING: at vmkdrivers/src_92/vmklinux_92/vmware/linux_net.c:3707/netdev_watchdog() (inside vmklinux)
    
    
  • The issue can impact multiple network adapter types across multiple hardware vendors. The exact logging that occurs during a transmit timeout may vary from card to card.
    
    
• The Python package import might fail on the newer Python version 2.7.9. The issue occurs as the newer version of Python is unable to locate the module pkg_resources.py resulting in the "import pkg_resources" statement to fail.
  
  

Deployment Considerations

None beyond the required patch bundles and reboot information listed in the table above.

Patch Download and Installation