It is surprising to see this here, but I see how it could be interesting. When we were experimenting very early on with Tailscale I went Googling around for IP ranges just to understand the space better and that was when I first discovered CGNAT.
It took a bit of digging through RFC6598 to realize that, if it's only being used properly (and I had never seen it used directly), then it would be generally available for an overlay network.
Since then we've run into a couple of other edge cases where people are using CGNAT. More reason for us to get our IPv6 support sorted out.
It took a bit of digging through RFC6598 to realize that, if it's only being used properly (and I had never seen it used directly), then it would be generally available for an overlay network.
Since then we've run into a couple of other edge cases where people are using CGNAT. More reason for us to get our IPv6 support sorted out.