Public Server on DHCP WAN interface for ASA5506

[W425]

Attempting to configure an ASA5506.  Need to expose internal server/port on outside interface and outside interface is a DHCP client.  The outside interface also NAT's (with PAT) the internal ip space to the single outside IP address.  I'm rusty on IOS (so using ASDM), so apologize if there is a simple solution.  The ASDM requires a IP address for the outside interface to configure for a public server, but obviously the outside IP address will change with DHCP.

[Karsten Iwen]

In ASDM, there is a placeholder (the icon is a little green NIC) for the name of the interface. This always is a reference to the actual IP of the interface.

[W425]

Re: In ASDM, there is a placeholder (the icon is a little green NIC) for the
name of the interface. This always is a reference to the actual IP of the
interface.

Although there is a selection for the outside interface, the dialogue also
requires an IP address and there is no option to select a reference to the
outside interface (eg, the icon with a little green NIC).

[Karsten Iwen]

Then you are doing something wrong in the ASDM, but I have no idea what it is. You still could configure it with the CLI. There it looks like the following to do a port-forwarding for HTTP:

object network SERVER
 host 10.10.10.80
 nat (inside,outside) static interface service tcp 80 80