Tested with and without kernel change with kernel change. With:
client% mount -v
192.168.35.1:/data/home/ambrisko/netboot on / (nfs, fsid 01ff003a3a000000, vnodes: count 553 active 72)
devfs on /dev (devfs, fsid 00ff007171000000, vnodes: count 27 active 16)
procfs on /proc (procfs, local, fsid 02ff000202000000, vnodes: count 2 active 1)
linprocfs on /compat/linux/proc (linprocfs, local, fsid 03ff00b5b5000000, vnodes: count 2 active 1)
linsysfs on /compat/linux/sys (linsysfs, local, fsid 04ff008a8a000000, vnodes: count 2 active 1)
fdescfs on /dev/fd (fdescfs, fsid 05ff005959000000, vnodes: count 3 active 2)
tmpfs on /tmp (tmpfs, local, fsid 06ff008787000000, vnodes: count 6 active 2)
tmpfs on /var/tmp (tmpfs, local, fsid 07ff008787000000, vnodes: count 2 active 1)
tmpfs on /var/run (tmpfs, local, fsid 08ff008787000000, vnodes: count 8 active 5)
devfs on /compat/linux/dev (devfs, fsid 09ff007171000000, vnodes: count 4 active 4)
fdescfs on /compat/linux/dev/fd (fdescfs, fsid 0aff005959000000, vnodes: count 2 active 2)
tmpfs on /compat/linux/dev/shm (tmpfs, local, fsid 0bff008787000000, vnodes: count 2 active 1)
192.168.31.1:/data on /data (nfs, fsid 0cff003a3a000000, vnodes: count 2 active 2)
192.168.35.1:/data/home/ambrisko/netboot/usr/local on /usr/local (nfs, fsid 0dff003a3a000000, vnodes: count 73 active 2)
192.168.35.1:/data/home/ambrisko/netboot/var on /var (nfs, fsid 0eff003a3a000000, vnodes: count 82 active 20)
Without:
% ./mount -v
192.168.97.254:/data/home/ambrisko/netboot on / (nfs)
devfs on /dev (devfs)
procfs on /proc (procfs, local)
linprocfs on /compat/linux/proc (linprocfs, local)
linsysfs on /compat/linux/sys (linsysfs, local)
fdescfs on /dev/fd (fdescfs)
tmpfs on /tmp (tmpfs, local)
tmpfs on /var/tmp (tmpfs, local)
tmpfs on /var/run (tmpfs, local)
tmpfs on /var/db/pkg (tmpfs, local)
%
On different machines but with the same binary.