Is there any progress to find out the reason for the problem?
I have the same issue on a proprietary server board. The Intel i211 network adapters are not shown in vSphere Client under Network Adapters.
An lspci -p shows the following output (regarding these network adapters):
0000:01:00.0 8086:1539 1775:3700 11/ 11/0x2c A V vmklinux_9 vmnic5
0000:02:00.0 8086:1539 1775:3700 10/ 10/0x2d A V vmklinux_9 vmnic1
0000:03:00.0 8086:1539 1775:3700 5/ 5/0x2e A V vmklinux_9 vmnic2
0000:06:00.0 8086:1539 1775:3700 5/ 5/0x2e A V vmklinux_9 vmnic3
0000:07:00.0 8086:1539 1775:3700 11/ 11/0x31 A V vmklinux_9 vmnic6
0000:08:00.0 8086:1539 1775:3700 11/ 11/0x2c A V vmklinux_9 vmnic7
0000:09:00.0 8086:1539 1775:3700 10/ 10/0x2d A V vmklinux_9 vmnic8
0000:0a:00.0 8086:1539 1775:3700 5/ 5/0x2e A V vmklinux_9 vmnic9
0000:0b:00.0 8086:1539 1775:3700 11/ 11/0x31 A V vmklinux_9 vmnic4
And lspci -v shows:
0000:01:00.0 Ethernet controller Network controller: Intel Corporation I211 Gigabit Network Connection [vmnic5]
Class 0200: 8086:1539
--
0000:02:00.0 Ethernet controller Network controller: Intel Corporation I211 Gigabit Network Connection [vmnic1]
Class 0200: 8086:1539
--
0000:03:00.0 Ethernet controller Network controller: Intel Corporation I211 Gigabit Network Connection [vmnic2]
Class 0200: 8086:1539
--
0000:06:00.0 Ethernet controller Network controller: Intel Corporation I211 Gigabit Network Connection [vmnic3]
Class 0200: 8086:1539
--
0000:07:00.0 Ethernet controller Network controller: Intel Corporation I211 Gigabit Network Connection [vmnic6]
Class 0200: 8086:1539
--
0000:08:00.0 Ethernet controller Network controller: Intel Corporation I211 Gigabit Network Connection [vmnic7]
Class 0200: 8086:1539
--
0000:09:00.0 Ethernet controller Network controller: Intel Corporation I211 Gigabit Network Connection [vmnic8]
Class 0200: 8086:1539
--
0000:0a:00.0 Ethernet controller Network controller: Intel Corporation I211 Gigabit Network Connection [vmnic9]
Class 0200: 8086:1539
--
0000:0b:00.0 Ethernet controller Network controller: Intel Corporation I211 Gigabit Network Connection [vmnic4]
Class 0200: 8086:1539
So, it will be detected but from my perspective the wrong driver (vmklinux_9) was loaded.
Any suggestions?