FYI: [Openvpn-users] [Openvpn-devel] [ANNOUNCE] IPv6 payload patch

Gert Doering gert at
Mon Nov 1 09:45:32 CET 2010


On Sun, Oct 31, 2010 at 09:32:26PM -0700, Ted Mittelstaedt wrote:
> OK this is going to sound like a basic question, but what exactly
> does this do?  Does it encapsulate IPv4 VPN traffic inside of IPv6
> packets?  Or does it encapsulate IPv6 VPN traffic inside of IPv4?

Stock OpenVPN 2.1.x or 2.2 does not do any IPv6 at all (in --server mode).

My patch adds "encapsulation of IPv6 VPN traffic" to OpenVPN, across 
whatever protocol you use as transport (OpenVPN is not an "IPSEC style 
VPN", but does SSL over UDP or TCP, and IP on top of that).

JJO's patch adds "OpenVPN over IPv6 transport".

Together, these patches give you full IPv4-or-IPv6 over IPv4-or-IPv6.

Gert Doering
        -- NetMaster
did you enable IPv6 on something today...?

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