I was thinking of this recently too. Even if there was life out there, maybe they’re just watching to see if we can make it past the Great Filter or not and destroy ourselves.

As much as I support the notion. Some people, I’m thinking especially about international buyers and sellers, aren’t going to be able to do this. PayPal has too much of a monopoly on that front.

If it’s any use, here are the WAN IPv6 options (auto, manual, or IPv6CP Extension) for the ZTE-ZXHN-F670, it’s set to auto right now:

And these are the available LAN settings:

I’m located in Vietnam; the ISP is Viettel (probably not useful information, but hey, why not).

Is it possible to send the hint from OPNsense itself? I mentioned in the original post that OPNsense is behind the ISP router (ZTE-ZXHN-F670) which I kind of don’t want to touch due to the fact that the terminology is quite different and that the ISP people come over to run tests on it whenever there are service issues. Either way, I’ve already tried to search through the settings and couldn’t find any options for setting the prefix hint on the WAN side. I’m open to digging though those settings again if you’re familiar with the router.

I did forget to mention that. The IP addresses of the devices on the LAN do not share the same first half of the address as the IP on the ISP router. I have the OPNsense LAN set to track WAN interface, but the DHCP server is stuck saying “No available address range for configured interface subnet size.”. I also noticed that my WAN for OPNsense has a global routable IP starting with 2402 as well as a LLA starting with fe80 but my LAN only has a LLA.

Which routes and firewall rules should I be checking?

Thanks, I’ll look more into it.