esx.problem.dhclient.lease.none
Summary
Unable to obtain a DHCP lease.
Causes
There is an issue with the vmknic configuration for this host, or the DHCP server is unavailable.
Resolutions
Check that the DHCP server is available. Check that vmknic is configured correctly.
External
Refer to the VMware Online Documentation for more information on vCenter event messages and possible solutions.