Allow disabling of broadcast packets.

[tinc] / doc / tinc.texi

diff --git a/doc/tinc.texi b/doc/tinc.texi
index 3bb4407..9befcfd 100644 (file)
--- a/doc/tinc.texi
+++ b/doc/tinc.texi
@@ -773,6 +773,10 @@ variable.
 
 This option may not work on all platforms.
 
+@cindex Broadcast
+@item Broadcast = <yes | no> (yes) [experimental]
+When disabled, tinc will drop all broadcast and multicast packets, in both router and switch mode.
+
 @cindex ConnectTo
 @item ConnectTo = <@var{name}>
 Specifies which other tinc daemon to connect to on startup.
@@ -785,6 +789,13 @@ If you don't specify a host with ConnectTo,
 tinc won't try to connect to other daemons at all,
 and will instead just listen for incoming connections.
 
+@cindex DecrementTTL
+@item DecrementTTL = <yes | no> (yes)
+When enabled, tinc will decrement the Time To Live field in IPv4 packets, or the Hop Limit field in IPv6 packets,
+before forwarding a received packet to the virtual network device or to another node,
+and will drop packets that have a TTL value of zero,
+in which case it will send an ICMP Time Exceeded packet back.
+
 @cindex Device
 @item Device = <@var{device}> (@file{/dev/tap0}, @file{/dev/net/tun} or other depending on platform)
 The virtual network device to use.