Am am currently visiting TU Wien and today I connected my Debian Linux laptop to their eduroam wlan using
wpa_supplicant and the credentials of my home institute - as always when I am visiting another scientific institution.
When I opened a terminal I noticed that my command promt was showing a different host name, and in fact, excecuting
hostname gave me
e244-082.eduroam.tuwien.ac.at instead of the usual host name of my machine
I am very puzzled by this. How on earth can it be possible that connecting to a wlan changes my host name without my consent?