[src/trunk]: src/share/man/man4 correct documentation for options TFTPROOT

[tnn <tnn%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f44e7a65ce12
branches:  trunk
changeset: 1007997:f44e7a65ce12
user:      tnn <tnn%NetBSD.org@localhost>
date:      Sat Mar 07 23:17:47 2020 +0000

description:
correct documentation for options TFTPROOT

TFTPROOT does *not* require MEMORY_DISK_IS_ROOT. In fact, it doesn't
work at all when MEMORY_DISK_IS_ROOT is set, because then setroot()
tries to perform dhcp on md0 instead of the network card.

diffstat:

 share/man/man4/options.4 |  9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diffs (31 lines):

diff -r 896fa674ac7c -r f44e7a65ce12 share/man/man4/options.4
--- a/share/man/man4/options.4  Sat Mar 07 22:35:16 2020 +0000
+++ b/share/man/man4/options.4  Sat Mar 07 23:17:47 2020 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: options.4,v 1.508 2020/02/08 07:07:06 maxv Exp $
+.\"    $NetBSD: options.4,v 1.509 2020/03/07 23:17:47 tnn Exp $
 .\"
 .\" Copyright (c) 1996
 .\"    Perry E. Metzger.  All rights reserved.
@@ -30,7 +30,7 @@
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
 .\"
-.Dd February 8, 2020
+.Dd March 7, 2020
 .Dt OPTIONS 4
 .Os
 .Sh NAME
@@ -1323,10 +1323,9 @@
 .Xr mdsetimage 8 .
 The RAM disk name is obtained using DHCP's filename parameter.
 This option requires
-.Em MEMORY_DISK_HOOKS ,
-.Em MEMORY_DISK_DYNAMIC ,
+.Em MEMORY_DISK_HOOKS
 and
-.Em MEMORY_DISK_IS_ROOT .
+.Em MEMORY_DISK_DYNAMIC .
 It is incompatible with
 .Em MEMORY_DISK_ROOT_SIZE .
 .It Cd options HZ=integer