Problems that occur if the NFS kernel extension is not loaded
Some NFS commands do not run correctly if the NFS kernel extension is not loaded. Some commands with this dependency are: nfsstat, exportfs, mountd, nfsd, and biod.
When NFS is installed on the system, the kernel extension is placed in the /usr/lib/drivers/nfs.ext file. This file is then loaded as the NFS kernel extension when the system is configured. The script that does this kernel extension loads the /etc/rc.net file. There are other things done in this script, one of which is to load the NFS kernel extension. It is important to note that Transmission Control Protocol/Internet Protocol (TCP/IP) kernel extension and the nfs_kdes_null.ext file should be loaded before the NFS kernel extension is loaded.
Note: The gfsinstall command is used to load the NFS kernel
extension into the kernel when the system initially starts. This command can
be run more than once per system startup and it will not cause a problem.
The system is currently shipped with the gfsinstall command
used in both the /etc/rc.net and /etc/rc.nfs files.
There is no need to remove either of these calls.