change your android hostname

Connect it to your computer (I usually use SSHDroid to avoid touring a usb cable around and adb painfull syntax, I guess you need to root the device first to install it from google play)
Anyway once you are in type the following cmds:

# getprop net.hostname

android-ac1206717d813dd2

# setprop net.hostname alexDroid 

# getprop net.hostname

alexDroid

Changing alexDroid in whatyouprefer 

if you reboot it will reset everything. There is the possibility to change an entry into the db but it's a painfull process... still searching a way to make it boot-proof

a.