Configure ERLite-3 PXE boot to point to NFS server

Hello All,

EDIT:  Ok, just realized my mistake on, having checked the guide linked below again.  I thought it was pointing to the router, not the NFS server.

https://blog.laslabs.com/2013/05/pxe-booting-with-ubiquiti-edgerouter/

I'm trying to use that guide to allow clients to boot to the NFS server, and use CloneZilla to copy drive images.  However, whenever I get to set bootfile-server 192.168.5.11, I get "The specified configuration node is not valid".  Is there any way to fix this?

Thanks in advance.