The guide from VMware.com says
Converts vswif to eth when booting ESX Server into service-console-only mode rather than into ESX mode. This command is used for the bootstrap process and is intended for VMware Technical Support use only. You should not issue this command unless instructed to do so by a VMware Technical Support representative.
There is no VI Client equivalent for this command.
Wow I should have saved all these for one post called stuff you don’t use unless someone smart tells you to.
Don’t worry though I checked ahead esxcfg-module has more too it. I actually slightly looked at it when I covered esxcfg-boot.