On 02/08/2011 05:54 PM, Drew wrote:

I have posted to the ipsec-devel list and haven't gotten any responses. Also I
have spent 2 days googling with
no results about the above setup. Is it even possible to tunnel ipv4 packet thru
an ipv6 ipsec tunnel?

AFAIK, No.

IPv4 & IPv6 are different protocols so if you want to move IPv6
traffic over a IPv4 IPSEC tunnel you need to encapsulate the IPv6
payload within IPv4 packets. The reverse is also true of IPv4 over
IPv6.

This is why tunnel brokers like Freenet6 & Teredo exist, you can't
push IPv6 traffic out across an IPv4 only network without tunneling.

Hi Drew,

Thanks for taking the time to respond. I understand they are different. I want to
tunnel ipv4 in a ipv6 ipsec tunnel. Ipsec-tools lets me configure the tunnels and
establishes the SAs but packets get dropped on the receiving side. I am able to
create a 4in6 tunnel that ride inside a strict ipv6 ipsec tunnel so I have a work around.

I am mainly trying to see if anyone has gotten what I described in my initial post to work.

--
Stephen Clark
NetWolves
Sr. Software Engineer III
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark@netwolves.com
http://www.netwolves.com