Joachim Breitner's Homepage
Sometime someone connects his computer to mine using a network cable, to transfer some files or similar. In a perfect world, both computers would run something like zeroconf or avahi-autoip, and IP adresses were taken care of. But in the real world, this is not often the case. Then, this would be easiest:
$ ifconfig eth0 192.168.42.1 $ simpledhcpd eth0
Where simpledhcpd would, without any configuration, start listening for DHCP requests on eth0 and serve IPs from the just configured subnet. No configuration file, no leases, not even a deamon mode. Just Real Simple IPs for your ad-hoc-network. Does that already exists?