Unfortunately, due to the limited hardware capabilities and restricted flash memory of the TRB140, it does not support installing the NAT64 package, which is necessary for translating communication between IPv6 and IPv4 hosts.
However, I will double-check these requirements and limitations on the TRB140 and update you shortly in case there are any feasible alternatives.
In addition, does your IPv6 network support customer-side translator (CLAT)/464XLAT? If so, there might be a possible way for achieving the required setup, nevertheless, then we’re going to continue this process with instructions privately.
While I understand the hardware and flash memory limitations you mentioned, I wanted to highlight that the official documentation and feature list for the TRB140 at the time of purchase indicated support for NAT64. This was one of the reasons I selected this model for my setup.
I’ve reached out to our R&D team regarding NAT64/jool support on TRB devices, as well as potential alternatives for your intended setup. I’ll make sure to get back to you as soon as there’s any feedback, clarification, or an update from their side.
To clarify, unfortunately, even with NAT64, it wouldn’t be possible to make devices on IPv4 LAN reach your MikroTik over IPv6 public, because NAT64/jool only allows reaching IPv4 devices in LAN from IPv6 public network, but not vice versa.
Let me know if you have any other questions or need any of the assistance.
Thank you for your detailed clarification and for reaching out to the R&D team.
I now understand that NAT64 (Jool) is primarily designed to allow IPv6-only clients to access IPv4 services, not the other way around. This makes sense for many internet use cases, but unfortunately doesn’t align with my current setup where I want IPv4-only remote clients to reach an IPv6-only MikroTik device.
Given this, I’ll wait to hear back from your R&D team regarding any possible alternatives or routing configurations that might help bridge this direction of communication.
Also, if there are any Teltonika routers that do support NAT64/Jool, I would appreciate your recommendation, as I’m open to upgrading the hardware if needed.
However, it’s important to note that even if the TRB140 supported NAT46, it would still require a public IPv4 address. This would, in many cases, negate the benefit of using NAT46, as other options like port forwarding or VPN tunneling would likely offer a more practical and reliable solution, especially since your MikroTik device isn’t strictly IPv6-only and can support both stacks.
Regarding NAT64/Jool support, if you’re still exploring NAT64 (IPv6 → IPv4 translation) for other use cases, below is a list of Teltonika devices that support it:
Click to expand
OTD500; RUTC50;
All RUTM series;
All RUTX series;
Please let us know if you’d like assistance choosing the most suitable device based on your network design or if you’d like configuration guidance for VPN-based alternatives.
