The vmxnet3.ko in VMware's ESXi 5.5 tools does not work with FreeNAS 9.2.X, I have recompiled the (unmodified) source code for this driver, and am making available a ready to go kernel module for the FreeNAS versions listed below. You will want to temporarily use the E1000 NIC type so you can copy the driver into FreeNAS, then change it to VMXNET3 on the next boot.
For instructions on how to install the driver, see the latter part of the following post:...
vmxnet3.ko for FreeNAS 9.2.0 in ESXi 5.5
For instructions on how to install the driver, see the latter part of the following post:...
vmxnet3.ko for FreeNAS 9.2.0 in ESXi 5.5