> On Apr 3, 2025, at 16:35, Jack Raats <[email protected]> wrote:
>
> Hi,
>
> I have two servers, both running FreeBSD 14.2
>
> Server A has only one ipv4 address, no ipv6.
>
> Server B has one ipv4 address and an ipv6 subnet.
>
> Is it possible to give Server A an ipv6 address from server B ipv6 subnet and
> ipv6 connectivity and how?
You can set up an IPv4 point-to-point tunnel between them, and then have server
B delegate a small section of its IPv6 subnet (or a single address I suppose)
to the far side of that tunnel. It might only require setting IPv6 addresses
on the point-to-point tunnel itself, but I’m not certain.
It should be easy to search for “ipv6 in ipv4 tunnel freebsd” to find
instructions. I know I’ve done things like this, but don’t have an example to
look at right now. I had set up a “gif0” tunnel interface to an outside
provider, back in the FreeBSD 10/11 days (or before). I would expect the same
on your Server A, but I’m not sure if the setup on Server B will be that simple
or more complicated.
- Chris
