How to NAT from IPv4 to IPv6 (NAT46) Network on Cisco SDWAN?

[TheOrdinary1]

Hi, I have been exploring option to do NAT46 (from IPv4 to IPv6 Network) on Cisco Catalyst SDWAN devices. Is this option available or only NAT64 is available?

[helpcenterus]

Hi @TheOrdinary1! Yes, Cisco Catalyst SDWAN devices support NAT46, allowing you to seamlessly transition from IPv4 to IPv6 networks.

[TheOrdinary1]

@helpcenterus Thank for the response. Can you share any reference please? 

[Kanan Huseynli]

Hi,

it seems there is no support. Even qualified command reference contains only nat66/nat64.

But in CLI I found "nat64 v4v6" option, however before any test from which interfaces you want to do NAT? Inside service side or from service to internet?

[TheOrdinary1]

>From Service side (v4) to WAN/Internet (v6).

[MHM Cisco World]

there are two NAT
NAT64 and NAT46 
I share below link for NAT46
MHM

[Kanan Huseynli]

Is it dual-stack on WAN interface (both ipv4 and ipv6) or only ipv6? Do you use ipv6 to reach controllers?

[Kanan Huseynli]

https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/nat/nat-book-xe-sdwan/configure-nat64.html

I've read related document and even tried using IOS XE legacy ways, it seems there is no support from IPv4 to IPv6 access. By the way, "wording" of this doc is very confusing.

[MHM Cisco World]

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_nat/configuration/xe-16-10/nat-xe-16-10-book/iadnat-46.html

MHM

[Kanan Huseynli]

These are autonomous mode commands. In SD-WAN not all IOS XE commands/ features are supported..