IPSEC Tunnel having Spoke Side Ipv4 and Hub side IPv6

[TaimurKhan]

Hi all,

I wants to try to make IPSec Tunnel with one end (spoke)  having IPv4 as tunnel source and Hub end is having IPv6 address. 

Is that possible? as I have tested GRE by having both ends have IPV6 and it is working.

Thanks

[MHM Cisco World · Accepted solution]

Sorry it not possible 

Both end must have same IP verion

But you can use ipv4 ovrr ipv6 or ipv6 over ipv4

MHM

[TaimurKhan]

@MHM Cisco World 

Thanks for the reply. Kindly can u share some cisco documentation or some source as i have to present it to my management.

Thanks

[MHM Cisco World]

Sure friend 

Below for ipv6 over ipv4

https://www.cisco.com/c/en/us/td/docs/routers/ios/config/17-x/sec-vpn/b-security-vpn/m_sec-ipv6-ipv4-gre.html

MHM

[Cristian Matei]

Hi,

   Well, there's no document out there (specially from vendors), making this statement as it's just obvious. Without being impolite here, tell your management that you can't leave your house by car (IPv4 tunnel source) and reach your destination by bicycle (IPv6 tunnel destination) without shifting between the two at some point; so you start and end by car (IPv4 tunnel source and destination) and along the road you change to bicycle (IPv6 tunnel source and destination).

Best,

Cristian.