Unable to obtain a DHCP lease.
There is an issue with the vmknic configuration for this host, or the DHCP server is unavailable.
Check that the DHCP server is available. Check that vmknic is configured correctly. Further information can be found in the VMware KB article Failure to obtain a DHCP lease (2000772).
Refer to the VMware Online Documentation for more information on vCenter event messages and possible solutions.