A few more things left to try before giving up:

Post the output from:

# vmkchdev -L

Try the procedure described here to manually enable a vmnic (assign to vmkernel): How to Disable a vmnic in ESX(i) | virtuallyGhetto

E.g. run:

# vmkchdev -v 000:009:00.0

# vim-cmd hostsvc/net/refresh

/vmkdevmgr/pci/s00000004.01/alias = "vmnic3" #is there syntax mistake?

Should be fine, I have similar entries on my hosts.

Backup /etc/vmware/esx.conf and remove all references pointing to vmnic2 and vmnic3 in the file. Then run these commands and reboot:

# /sbin/auto-backup.sh

# backup.sh 0

~ # enum_instances VMware_EthernetPort root/cimv2

error: enumInstances Failed initialization

This error is due to this bug:

VMware KB: Running the cim-diagnostic.sh or swfw.sh command fails with the error: enumInstances Fail...

Simply comment out the ipv6 localhost ::1 entry in /etc/hosts.