Yes, 172.18.0.1 should be an address of the school server.
Open Firmware also uses this address for network time protocol (NTP),
and network boot.
It looks for http://172.18.0.1/fs{,0,1,2,4}.zip and, if signature is
good, executes the payload. In this way it is possible to deliver any
Open Firmw
I found the problem:
i just had to add the following configuration to lan interface
configuration file, which in my case is
/etc/sysconfig/network-scripts/ifcfg-p2p1
# The actrd initramfs tries to connect to the server on 172.18.0.1 to
request
# activation. Retain this old/deprecated address bind
