HOSTNAME variable

[Hiro Protagonist]

hello

i seem to have some problems with my DHCP/DNS settings. when trying a 
FAI installation, the HOSTNAME variable always resolves to 
"fai-live-host". i tried to create a workaround that gets the hostname 
from the ipaddress, assigns it to $HOSTNAME (and exports HOSTNAME). but 
that does not work: FAI ends up in a shell and $HOSTNAME is still 
"fai-live-host".

where does FAI assign the HOSTNAME variable? can't i change it? or what 
else could have gone wrong?

(this is on FAI 3.4.0ubuntu2)

thanks in advance!