Hi Richardson,
Thanks for the advice. I have updated the driver:
/tmp/vib # esxcli software vib list | grep ixgbe
net-ixgbe 3.7.13.7.14iov-11vmw.550.0.0.1331820 VMware VMwareCertified 2014-09-18
And also restarted the host, but the option to add FCoE adapter is still greyed out unfortunately.
Regards,
Oliver