kern/58064: missing NFSv4 support

[campbell+netbsd%mumble.net@localhost]

>Number:         58064
>Category:       kern
>Synopsis:       missing NFSv4 support
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Mar 21 21:55:00 +0000 2024
>Originator:     Taylor R Campbell
>Release:        current, 10, 9, 8, ...
>Organization:
The NfsBSD4 Foundation
>Environment:
>Description:
NetBSD only supports NFS up to v3, not v4.
>How-To-Repeat:
- try to use nfsv4
- expect any security properties against network adversaries out of nfs
>Fix:
Yes, please!