iptunnel - Create and manage IP tunnels
iptunnel { add | change | del | show } [ NAME ]
[ mode { ipip | gre | sit } ] [ remote ADDR ] [ local ADDR ]
[ [i|o]seq ] [ [i|o]key KEY ] [ [i|o]csum ]
[ ttl TTL ] [ tos TOS ] [ nopmtudisc ] [ dev PHYS_DEV ]
iptunnel -V | --version
Where: NAME := STRING
ADDR := { IP_ADDRESS | any }
TOS := { NUMBER | inherit }
TTL := { 1..255 | inherit }
KEY := { DOTTED_QUAD | NUMBER }
iptunnel can be used to add, change, delete and show IP
tunnels on the machine.
- help
- Show the help text.
- show
- List existing IP tunnels.
- { add | change | del } [ NAME ]
- Specify an action (add, change or delete an IP
tunnel) to be executed by iptunnel on the tunnel named NAME,
which must be a string. You must specify one action.
- mode PROTOCOL
- Specify the PROTOCOL to be used for the IP tunnel. It can be
ipip for TCP/IP, gre for Cisco GRE tunnel (RFCs 1701 and
1702), or sit for IPv6-in-IPv4 tunneling.
- remote
ADDR
- Set the remote (i.e., destination) address of the tunnel. ADDR must
be an IP address or the word any.
- local ADDR
- Set the local (i.e., source) address of the tunnel. ADDR must be an
IP address or the word any.
- iseq
- Require that all incoming packets are serialized. Only applicable for
GRE tunnels.
- oseq
- Enable serialization (sequencing) for all outgoing packets. Only
applicable for GRE tunnels.
- ikey KEY
- Specify the input key for the Cisco GRE tunnel. KEY must be either
in dotted quad (dotted decimal) or a number. Only applicable for
GRE tunnels.
- okey KEY
- Same as ikey, but set the output key instead. Only applicable for
GRE tunnels.
- icsum
- Require that all incoming packets have the correct checksum. Only
applicable for GRE tunnels.
- ocsum
- Calculate checksums for all outgoing packets. Only applicable for
GRE tunnels.
- ttl TTL
- Specify the Time-To-Live value for the IP tunnel. TTL must
be a value between 1 and 255, or the word inherit,
which causes the field to be copied from the original IP header.
- tos TOS
- Specify the Type-Of-Service value for the IP tunnel. TOS
must be a value between 1 and 255, or the word
inherit, which causes the field to be copied from the original IP
header.
- nopmtudisc
- Disable Path MTU Discovery on this tunnel. Note that a fixed
ttl is incompatible with this option.
- dev PHYS_DEV
- Bind the tunnel to the device PHYS_DEV.
<https://sourceforge.net/projects/net-tools/>
This manpage was written by Sergio Durigan Junior <sergiodj
(at) sergiodj (dot) net>. A few parts were inspired by
ip-tunnel(1)'s manpage.
Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU General Public License, Version 2 or any
later version published by the Free Software Foundation.