Collecting Ethernet adresses necessary?

[Ingo Wichmann]

Werner Fischer wrote:

> I don't care about the IP address during installation (the IP addresses
> will be changed afterwards anyway). The hostname should always be the
> same for a machine in a class (either "system1" or "system2"). Is there
> a way to omit the step "Collecting MAC addresses"?

Yes, if you don't need fixed addresses configure your dhcp in a way that 
every machine gets a random ipaddress:

/etc/dhcpd.conf:

   subnet 172.16.240.0 netmask 255.255.255.0 {
     range 172.16.240.140 172.16.240.179;
   }
   filename "pxelinux.0";
   option root-path "/var/lib/fai/nfsroot";

> Question 2:
> The hardware for machines for "system1" class and "system2" class is
> exactly the same. If the faiserver has two network interfaces, is it
> possible to use both network interfaces for FAI installation in a way
> that machines, that are connected to eth0 on the faiserver will be in
> class "system1" and machines, that are connected to eth1 on the
> faiserver will be in class "system2"?

Yes. Give your server two different ip addresses:
ifconfig eth0 172.16.240.7
ifconfig eth1 192.168.1.7

Just assign different ip-addresses for the different networks:
/etc/dhcpd.conf:
   subnet 172.16.240.0 netmask 255.255.255.0 {
     range 172.16.240.140 172.16.240.179;
   }

   subnet 192.168.1.0 netmask 255.255.255.0 {
     range 192.168.1.140 192.168.1.179;
   }

Ingo