> I don't know that it's directly possible. The way I would try to achieve
> this is working with DNS, looking into dynamic registration of your
> laptop's A record.
>
> If that's not feasible, an alternative may be to have the two IP
> addresses associated with your laptop's A record; perhaps Bacula's
> network code would try them sequentially. Not to be used with
> round-robin DNS, though. Also, it won't work if the addresses are
> dynamically assigned.
>
> And if the machines on your wired and wireless networks are assigned
> different DNS domain suffixes, then this won't work.

I had a go at getting dynamic DNS working and failed.

The way that I managed to get this working was to write a perl script that
monitors (tail -f basically) the DHCPD logs and then edits the client config
file and forces the director to reload.

This method also means that I can trigger other actions when a user's laptop
is connected, such as updating my inventory database, triggering bacula
backup jobs depending on which subnet (site) the laptop is on.

If you're interested, I could post some code.