UDP for NFS mounts has been disabled since Ubuntu 20.10 ("Groovy Gorilla"), maybe that's what is failing for you.
There is an entry in the Jammy release notes[1] about it, search for the header "UDP disabled for NFS mounts".
1. https://discourse.ubuntu.com/t/jammy-jellyfish-release-notes/24668
UDP for NFS mounts has been disabled since Ubuntu 20.10 ("Groovy Gorilla"), maybe that's what is failing for you.
There is an entry in the Jammy release notes[1] about it, search for the header "UDP disabled for NFS mounts".
1. https:/ /discourse. ubuntu. com/t/jammy- jellyfish- release- notes/24668