The description seems reasonable to me:
cmdline.txt and fstab had hardcoded 10.21.0.1 NFS server IPs.
Convert to Jinja2 templates using {{ eth_local_address }} and
{{ nfs_root }} so they work across sites with different IPs
(e.g. welland at 10.31.0.3, PS1 at 10.21.0.1).
The IP address range 10.31.X.X is what I'm using for the fpgas.online in my network.
