[Xymon] host with multiple addresses, not all active or known in advance

[Richard L. Hamilton]

I have a home network, and a laptop.  At home, the laptop has (whether statically or via DHCP) a fixed non-routable private IP address.  On the road, once I get my router's IPv6 support working, it may have an IPv6 address with probably a variable /64 prefix.

I know about "dialup", useful for a device where it's normal if it's not connected all the time.  But how can I best make the multiple IP address situation work for a single Xymon entry, esp. given that I may have no control of the IPv6 prefix.  I do have "Back To My Mac" tunneling...but the xymon server is not a Mac (actually, it's a domain running Solaris on a Sun T5240), although if I could set up something that was forwarding-only on a Mac desktop client, that might let me set up the laptop to report to that Mac via the tunnel.  Not sure what my prospects are setting up an inbound tunnel using a D-Link router (evidently with the help of one of the clients, since the full tunnel setup is beyond the D-Liink's capability.  Pretty sure it can set up an outbound tunnel, not so sure what it can do for an inbound one, even with suitable inbound NAT entry and support from one of the client systems).

Right now, my Mac doesn't appear on my Xymon at all.  I'd like it to appear, and might even add a "location" column with client-side process, so it's whereabouts can be tracked independently of Apple's facilities to find a missing mobile device.  I think I know how to do the latter, save that the sample code I have for using a Mac's "Location Services" does not convert decimal coordinates to human-readable degrees, minutes, seconds, nor to nearest placename + azimuth/range offset.