l2tp tunnel. IPv6 inside IPv4 using Linux box.

Hi Folks,
I'm working on a project, the goal is as follows and I have it working with IPv4.
PPPoE laptop client connected to Cisco router.
The Cisco is a LAC and when the PPPoE request is received it establishes a l2tp tunnel to a Linux LNS.
This box is running Ubuntu with OpenSwan, ppp and xl2tp. We don't have budget for this project to purchase another Cisco router so need to get it done using Linux box as a router. Its a physical server, not a VM.
The tunnel comes up and the client gets its IPv4 address from the LNS and all is good. The linux box has IPv4 forwarding turned on.

Now the main mission is to accomplish the above but the client must get an IPv6 address. The tunnel will be established using IPv4.
Appreciate any tips.

This is for lab tests not production.

Regards,
Q.
quemlar1701Asked:
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nociSoftware EngineerCommented:
Why not use the IPv6 tunnels like described in here in below tldp reference.
The exact choice depends on what you want to accomplish with your tunnel.
Also the Gentoo project has a good description on configuration of this interconnection.
(it is geared towards gentoo but should be usable for concepts & part of configuration)
The same goes for the arch documentation, maybe more close to Ubuntu.

Note first read all pages, as they present several choices on various levels and you may have requirements that make some options obsolete.

http://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/chapter-configuring-ipv6-in-ipv4-tunnels.html
https://wiki.gentoo.org/wiki/IPv6_router_guide
https://wiki.archlinux.org/index.php/IPv6
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frankhelkCommented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: noci (https:#a40880611)

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

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