Random Thoughts by Paul

From time to time I find myself needing to treat one class of devices differently than another class of devices as dhcp clients. This becomes very common when dealing with sip phones, different phones need different/conflicting configuration parameters. The typical way to deal with this is to have an entry per device to specify how it will behave. That behavior doesn't scale very well unless you have an automated system to modify the dhcpd configuration on the fly. It turns out that dhcpd has quite a few advanced features that few people ever stumble upon.