Why was my RHEL 6 VMware guest rebooted after the leap second insertion scheduled on June 30 2015 @ 23:59:60 UTC ?

Solution Unverified - Updated -

Issue

  • Why Red Hat Enterprise Linux 6 VMware guest were auto-rebooted after June 30 2015 leap second insertion ?
  • Multiple Red Hat Enterprise Linux 6 VMware guest were rebooted after leap second insertion. Many other servers running the same version of kernel were not affected
  • Red Hat Enterprise Linux 6 update 6 VM's were automatically rebooted after June 30 leap second insertion

Environment

  • Red Hat Enterprise Linux (RHEL) 6
  • VMware ESXi 5.5.0
  • Vmware ESX 5.1
  • June 30 leap second insertion

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