Decrement TTL of incoming packets.

[tinc] / doc / tinc.conf.5.in

diff --git a/doc/tinc.conf.5.in b/doc/tinc.conf.5.in
index 0fc1ca1..8d8e6f1 100644 (file)
--- a/doc/tinc.conf.5.in
+++ b/doc/tinc.conf.5.in
@@ -133,7 +133,10 @@ IPv6 listening sockets will be created.
 If your computer has more than one IPv4 or IPv6 address,
 .Nm tinc
 will by default listen on all of them for incoming connections.
 If your computer has more than one IPv4 or IPv6 address,
 .Nm tinc
 will by default listen on all of them for incoming connections.

-It is possible to bind only to a single address with this variable.
+Multiple
+.Va BindToAddress
+variables may be specified,
+in which case listening sockets for each specified address are made.

 
 .Pp
 This option may not work on all platforms.
 
 .Pp
 This option may not work on all platforms.


@@ -165,6 +168,14 @@ If you don't specify a host with
 won't try to connect to other daemons at all,
 and will instead just listen for incoming connections.
 
 won't try to connect to other daemons at all,
 and will instead just listen for incoming connections.
 

+.It Va DecrementTTL Li = yes | no Po yes Pc
+When enabled,
+.Nm 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.
+

 .It Va Device Li = Ar device Po Pa /dev/tap0 , Pa /dev/net/tun No or other depending on platform Pc
 The virtual network device to use.
 .Nm tinc
 .It Va Device Li = Ar device Po Pa /dev/tap0 , Pa /dev/net/tun No or other depending on platform Pc
 The virtual network device to use.
 .Nm tinc