ESXi NIC information

Run this command to check if the legacy driver "ixgbe" has been loaded for 10 Gigabit Network card: /usr/lib/vmware/vm-support/bin/nicinfo.sh | less

You see output:

NIC: vmnic4

NICInfo:
Advertised Auto Negotiation: false
Advertised Link Modes: 10000BaseX/Full
Auto Negotiation: false
Cable Type: FIBRE
Current Message Level: -1
Driver Info:
NICDriverInfo:
Bus Info: 0000:04:00:0
Driver: ixgbe (or similar)
Firmware Version: 0x80000838
Version: 1.0.0.0