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Man Pages


Manual Reference Pages  -  TAYGA (8)

NAME

tayga - stateless NAT64 daemon

CONTENTS

Synopsis
Description
Invocation
Options
Author
Copyright

SYNOPSIS

tayga [OPTION]...

tayga --mktun [OPTION]...

tayga --rmtun [OPTION]...

DESCRIPTION

TAYGA is a stateless NAT64 daemon for Linux. Using the in-kernel TUN network driver, TAYGA receives IPv4 and IPv6 packets from the host’s network stack, translates them to the other protocol, and then sends the translated packets back to the host using the same TUN interface.

Translation is compliant with IETF Internet-Draft draft-ietf-behave-v6v4-xlate-23, and address mapping is performed in accordance with RFC 6052. Optionally, TAYGA may be configured to dynamically map IPv6 hosts to addresses drawn from a configured IPv4 address pool.

As a stateless NAT, TAYGA requires a one-to-one mapping between IPv4 addresses and IPv6 addresses. Mapping multiple IPv6 addresses onto a single IPv4 address can be achieved by mapping IPv6 addresses to private IPv4 addresses with TAYGA and then using a stateful NAT44 (such as the iptables(8) MASQUERADE target) to map the private IPv4 addresses onto the desired single IPv4 address.

TAYGA’s configuration is stored in the tayga.conf(5) file, which is usually found in /etc/tayga.conf or /usr/local/etc/tayga.conf.

INVOCATION

Without the --mktun or --rmtun options, the ‘tayga‘ executable runs as a daemon, translating packets as described above.

The --mktun and --rmtun options instruct TAYGA to create or destroy, respectively, its configured TUN device as a "persistent" interface and then immediately exit.

Persistent TUN devices remain present on the host system even when TAYGA is not running. This allows host-side network parameters and firewall rules to be configured prior to commencement of packet translation. This may simplify network configuration on the host; for example, systems which use a Debian-style /etc/network/interfaces file may configure TAYGA’s TUN device at boot by running ‘tayga --mktun‘ as a "pre-up" command and then configuring the TUN device as any other network interface.

OPTIONS

-c configfile | --config configfile
  Read configuration options from configfile
-d Enable debug messages (enables --nodetach as well)
-n | --nodetach
  Do not detach from terminal
-u userid | --user userid
  Set uid to userid after initialization
-g groupid | --group groupid
  Set gid to groupid after initialization
-r | --chroot
  chroot() to data-dir (specified in config file)
-p pidfile | --pidfile pidfile
  Write process ID of daemon to pidfile

AUTHOR

Written by Nathan Lutchansky <lutchann@litech.org>

COPYRIGHT

Copyright © 2010 Nathan Lutchansky
License GPLv2+: GNU GPL version 2 or later
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

tayga.conf(5)
<http://www.litech.org/tayga/>

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TAYGA 0.9.2 TAYGA (8) June 2011

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