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

Ted Mittelstaedt tedm at
Mon Nov 1 19:16:31 CET 2010

On 11/1/2010 1:10 AM, Martin Millnert wrote:
> Hi,
> On Mon, November 1, 2010 5:32 am, 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?
>> Ted
> A short answer is:
> "IPv4 VPN traffic inside IPv6" == IPv6 transport
> "IPv6 VPN traffic inside IPv4" == IPv6 payload
> Now re-read the announcement with this new information. :)
> It also aims to bring feature parity to OpenVPN between IPv4 and IPv6,
> which means in the case of IPv6 payload, that you can do
> Point-to-Multipoint interfaces where, just as in IPv4, the server handles
> a pool of links/addresses automagically. Kind-of neat, if you ask me.
> A tiny caveat is that the IPv6 payload code right now sits together with
> the IPv4 code somehow, so you must configure IPv4 addresses as well, to
> get IPv6 addresses working.
> But that's a later step, I guess.
> I recently configured a simple tunnel using information at
> - which has a link to Ubuntu debs
> that worked fine to install to Debian Lenny and Debian Squeeze.
> tun-ipv6 didn't work on a Xen 2.6.18 domU of mine, so something newer than
> that is required I suppose, for Linux.
> Having tunneled but real IPv6 anywhere rather than not at all is important
> to me, so I'm grateful for these patches. :)

I am interested in seeing this in the dd-wrt codebase.  How soon until 
it is part of the regular openvpn distribution?


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