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[ Last updated: 17-Sep-2009. ]
This README covers UDP/IPv6 v0.4.x ( --udp6 and --tcp6-xxxxxx ) support
for openvpn-2.1.
Available under GPLv2 from
http://github.com/jjo/openvpn-ipv6
* Working:
OK:
- upd6,tcp6: GNU/Linux, win32
- udp4->upd6,tcp4->tcp6 (ipv4/6 mapped): GNU/Linux
(gives a warning on local!=remote proto matching)
NOT:
- tcp4->tcp6 (ipv4/6 mapped): win32
fails w/connection refused
* 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()
* TODO: See TODO.ipv6
--
JuanJo Ciarlante jjo () google () com
: :
. Linux IP Aliasing author .
. Modular algo (AES et all) support for FreeSWAN/OpenSWAN author .
:... plus other scattered free software bits in the wild ...:
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