set Computer & Local Hostname with firstboot script

Hi I was trying to extend the firstboot script with the function "set Computer & Local Hostname" as you can see in the script below. [code]#Script to change Computer & Local Hostname # ConsoleMessage echo "set Computer & Local Hostname" ip=`ifconfig en0 inet | grep inet | sed 's/.*inet *//; s/ .*//'` echo "$ip" ip4=`echo $ip | sed 's/\./-/g'` echo "$ip4" scutil --set ComputerName "stud $ip" scutil --set LocalHostName "stud$ip4"[/code] After creating an image with InstaUp2Date and distribute it with DeployStudioServer the imaged machine produces the following error message 3/4/11 2:01:45 PM ch.uzh.ifi.firstboot[52] set Computer & Local Hostname 3/4/11 2:01:45 PM ch.uzh.ifi.firstboot[52] 2011-03-04 14:01:45.418 writeconfig[225:903] *** -[NSMachPort handlePortMessage:]: dropping incoming DO message because the connection or ports are invalid 3/4/11 2:01:45 PM ch.uzh.ifi.firstboot[52] ifconfig: interface en0 does not exist If I test "ifconfig en0" after reboot it works as expected. Any idea how to solve this? thanks enrico