Diffstat (limited to 'usr.sbin/ntp/doc/ntp.conf.5')
1 files changed, 21 insertions, 2 deletions
diff --git a/usr.sbin/ntp/doc/ntp.conf.5 b/usr.sbin/ntp/doc/ntp.conf.5
index 42af4a5eb713..8a79f672e751 100644
@@ -1,11 +1,11 @@
-.Dd June 2 2016
+.Dd November 21 2016
.Dt NTP_CONF 5 File Formats
.\" EDIT THIS FILE WITH CAUTION (ntp.mdoc)
-.\" It has been AutoGen-ed June 2, 2016 at 07:36:16 AM by AutoGen 5.18.5
+.\" It has been AutoGen-ed November 21, 2016 at 08:02:03 AM by AutoGen 5.18.5
.\" From the definitions ntp.conf.def
.\" and the template file agmdoc-cmd.tpl
@@ -1997,6 +1997,25 @@ At the same time, the manycast
scheme starts all over from the beginning and
the expanding ring shrinks to the minimum and increments
from there while collecting all servers in scope.
+.Ss Broadcast Options
+.Bl -tag -width indent
+.It Xo Ic tos
+.Cm bcpollbstep Ar gate
+This command provides a way to delay,
+by the specified number of broadcast poll intervals,
+believing backward time steps from a broadcast server.
+Broadcast time networks are expected to be trusted.
+In the event a broadcast server's time is stepped backwards,
+there is clear benefit to having the clients notice this change
+as soon as possible.
+Attacks such as replay attacks can happen, however,
+and even though there are a number of protections built in to
+broadcast mode, attempts to perform a replay attack are possible.
+This value defaults to 0, but can be changed
+to any number of poll intervals between 0 and 4.
.Ss Manycast Options
.Bl -tag -width indent
.It Xo Ic tos