When adding a VMware server to Solarwinds you will see the message 'When selecting the Poll for VMware also select Status Only: ICMP polling option above'.
I reached out to solarwinds support on case 00090414 who informed me it is actually best to choose SNMP instead of ICMP to collect additional network information including the interfaces on the VMware servers. If the node is polled via ICMP this information will not be collected. So the message above when adding a node is misleading as it isn't always correct if NPM is used.