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Diffstat (limited to 'openvpn/README.IPv6')
| -rw-r--r-- | openvpn/README.IPv6 | 138 |
1 files changed, 53 insertions, 85 deletions
diff --git a/openvpn/README.IPv6 b/openvpn/README.IPv6 index d504f4ff..56c97abb 100644 --- a/openvpn/README.IPv6 +++ b/openvpn/README.IPv6 @@ -1,97 +1,65 @@ +Since 2.3.0, OpenVPN officially supports IPv6, and all widely used +patches floating around for older versions have been integrated. + IPv6 payload support -------------------- -Latest IPv6 payload support code and documentation can be found from here: +This is for "IPv6 inside OpenVPN", with server-pushed IPv6 configuration +on the client, and support for IPv6 configuration on the tun/tap interface +from within the openvpn config. + +The code in 2.3.0 supersedes the IPv6 payload patches from Gert Doering, +formerly located at http://www.greenie.net/ipv6/openvpn.html + - http://www.greenie.net/ipv6/openvpn.html +The following options have been added to handle IPv6 configuration, +analogous to their IPv4 counterparts (--server <-> --server-ipv6, etc.) -For TODO list, see TODO.IPv6. + - server-ipv6 + - ifconfig-ipv6 + - ifconfig-ipv6-pool + - ifconfig-ipv6-push + - route-ipv6 + - iroute-ipv6 -Gert Doering, 31.12.2009 +see "man openvpn" for details how they are used. IPv6 transport support ---------------------- -[ Last updated: 25-Mar-2011. ] - -OpenVPN-2.1 over UDP6/TCP6 README for ipv6-0.4.x patch releases: -( --udp6 and --tcp6-{client,server} ) - -* Availability - Source code under GPLv2 from http://github.com/jjo/openvpn-ipv6 - - Distro ready repos/packages: - o Debian sid official repo, by Alberto Gonzalez Iniesta, - starting from openvpn_2.1~rc20-2 - o Gentoo official portage tree, by Marcel Pennewiss: - - https://bugs.gentoo.org/show_bug.cgi?id=287896 - o Ubuntu package, by Bernhard Schmidt: - - https://launchpad.net/~berni/+archive/ipv6/+packages - o Freetz.org, milestone freetz-1.2 - - http://trac.freetz.org/milestone/freetz-1.2 - -* Status: - o OK: - - upd6,tcp6: GNU/Linux, win32, openbsd-4.7, freebsd-8.1 - - udp4->upd6,tcp4->tcp6 (ipv4/6 mapped): GNU/Linux - (gives a warning on local!=remote proto matching) - o NOT: - - win32: tcp4->tcp6 (ipv4/6 mapped) fails w/connection refused - o NOT tested: - - mgmt console - -* Build setup: - ./configure --enable-ipv6 (by default) - -* Usage: - For IPv6 just specify "-p upd6" an proper IPv6 hostnames, adapting the example - from man page ... - - On may: - openvpn --proto udp6 --remote <june_IPv6_addr> --dev tun1 \ - --ifconfig 10.4.0.1 10.4.0.2 --verb 5 --secret key - - On june: - openvpn --proto udp6 --remote <may_IPv6_addr> --dev tun1 \ - --ifconfig 10.4.0.2 10.4.0.1 --verb 5 --secret key - - Same for --proto tcp6-client, tcp6-server. - -* Main code changes summary: - - socket.h: New struct openvpn_sockaddr type that holds sockaddrs and pktinfo, - (here I omitted #ifdef USE_PF_xxxx, see socket.h ) - - struct openvpn_sockaddr { - union { - struct sockaddr sa; - struct sockaddr_in in; - struct sockaddr_in6 in6; - } addr; - }; - - struct link_socket_addr - { - struct openvpn_sockaddr local; - struct openvpn_sockaddr remote; - struct openvpn_sockaddr actual; - }; - - PRO: allows simple type overloading: local.addr.sa, local.addr.in, local.addr.in6 ... etc - (also local.pi.in and local.pi.in6) - - - several function prototypes moved from sockaddr_in to openvpn_sockaddr - - several new sockaddr functions needed to "generalize" AF_xxxx operations: - addr_copy(), addr_zero(), ...etc - proto_is_udp(), proto_is_dgram(), proto_is_net() - -* For TODO list, see TODO.IPv6 - --- -JuanJo Ciarlante jjo () google () com ............................ -: : -. Linux IP Aliasing author . -. Modular algo (AES et all) support for FreeSWAN/OpenSWAN author . -. OpenVPN over IPv6 support . -:...... plus other scattered free software bits in the wild ...: +This is to enable OpenVPN peers or client/servers to talk to each other +over an IPv6 network ("OpenVPN over IPv6"). + +The code in 2.3.0 supersedes the IPv6 transport patches from JuanJo Ciarlante, +formerly located at http://github.com/jjo/openvpn-ipv6 + + +Use the following options to select IPv6 transport: + + --proto udp6 + --proto tcp6-client + --proto tcp6-server + --proto tcp6 --client / --proto tcp6 --server + +On systems that permit IPv4 connections on IPv6 sockets (Linux by +default, FreeBSD and NetBSD if you turn off the "v6only" sysctl by +running "sysctl -w net.inet6.ip6.v6only=0"), an OpenVPN server can +handle IPv4 connections on the IPv6 socket as well, making it a true +dual-stacked server. + +On other systems, as of 2.3.0, you need to run separate server instances +for IPv4 and IPv6. + +The client side code is not really "dual-stacked" yet, as it does not +automatically try both address families when connecting to a dual-stacked +server. For now, you can achieve this with <connection> stanzas in your +openvpn config: + + <connection> + remote my.dual.stack.server 1194 udp6 + </connection> + <connection> + remote my.dual.stack.server 1194 udp + </connection> |