[src/trunk]: src/usr.sbin/rtadvd sync with KAME/NetBSD14.

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

details:   https://anonhg.NetBSD.org/src/rev/4dcb6750e38e
branches:  trunk
changeset: 474474:4dcb6750e38e
user:      itojun <itojun%NetBSD.org@localhost>
date:      Thu Jul 08 00:41:21 1999 +0000

description:
sync with KAME/NetBSD14.
add warning about upstream/downstream advertisement.

diffstat:

 usr.sbin/rtadvd/rtadvd.8 |  12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diffs (26 lines):

diff -r 9f35d0c8c906 -r 4dcb6750e38e usr.sbin/rtadvd/rtadvd.8
--- a/usr.sbin/rtadvd/rtadvd.8  Wed Jul 07 23:33:50 1999 +0000
+++ b/usr.sbin/rtadvd/rtadvd.8  Thu Jul 08 00:41:21 1999 +0000
@@ -25,7 +25,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"     $Id: rtadvd.8,v 1.1 1999/07/02 09:28:17 itojun Exp $
+.\"     $Id: rtadvd.8,v 1.2 1999/07/08 00:41:21 itojun Exp $
 .\"
 .Dd May 17, 1998
 .Dt RTADVD 8
@@ -106,5 +106,11 @@
 The
 .Nm
 command first appeared in WIDE Hydrangea IPv6 protocol stack kit.
-.\" .Sh BUGS
-.\" (to be written)
+.Sh CAVEAT
+Do not perform router advertisement toward upstream direction,
+you should only advertise to downstream direction.
+If you advertise toward upstream by mistake,
+you will see icmp6 redirect storm on that subnet.
+This is because of the specification,
+which says that advertising router is assumed to become
+the default outgoing router for end hosts in the subnet.