Per the title - I have seen a couple of quite old threads here on this topic. My question though comes from a usability standpoint. NFS exports allow for multiple network identifications (machine names, IPs, ranges, etc.) to be specified on a single export by repeating the mount options with each range/IP/etc.
Logically then, specifying a white-space separated list of IPs/ranges/etc. in the "Client" input of the NFS share creation screen should then achieve this. On testing this I can provide multiple subnets for example, however when trying to mount from the client I get an error "mounting ... failed, reason given by server: No such file or directory" and it looks like the NFS exports fail. I haven't got quite enough knowledge to diagnose this much further, still learning.
All said, I know you can create a share twice, each one with different client restrictions - however this isn't a good UX, especially if one is a newbie, or if one has lots of shares to manage.
So I am not sure if this is a bug report, a feature request, or an open-ended discussion
Any advice/input welcome.