How could a jail learn which is its parent host?

[Miroslav Lachman]

Panagiotis Christias wrote:
> Hello,
>
> I am looking for a simple way so each jail could know at any time in
> which (physical) server is hosted. Any suggestions?

I am not sure what you need to know about host(s). If you have setup 
where jails are on NAS/SAN storage and you want to identify real HW, you 
can do it by MAC address of network card. It is available in jail. Other 
informations are mostly hidden.

Miroslav Lachman