vCenter Server 8.0 U3
Regardless of internet reachability, the vmware-pod service attempts to send requests to scapi.vmware.com.
Follow the instructions in the "Resolution" section of the KB article below to stop the vmware-pod service.
vCenter server is not using configured proxy for all traffic.
Japanese KB: vCenterがscapi.vmware.comに対して通信し続ける