autoyast network installating without specifiying server IP address

Hello, To specify where lives control file for an unattended SuSE 8.1 network installation, a switch is used. For example: autoyast=nfs://192.168.1.30/suse_profiles/ Note that the IP of the NFS server have to be staticly set in the switch. Is there any way of installing without specifing server IP address via DHPC? The fact is that programs as grub are capable of getting files without static server IP address configuration, so I wonder if autoyast can. Thanks in advance! ------------ Fermín