[j-nsp] GRE tunnel with dynamic IP address

[Markus]

On an M7i with builtin tunnel PIC running 8.0R2.8, is it possible to
create a GRE tunnel where the destination is at a dynamic IP address? The
destination is on a .dyndns.org hostname.

There is dynamic-tunnels under routing-options but I don't see how that
could help me.

What I want to achieve is to route a subnet of static IP addresses to the
endpoint of the tunnel behind a dynamic IP address.

Can anyone help?

Thanks,
Markus