TODO: is ServeDHCP always run from the same goroutine, or do we need locking?

Lookup returns the organization name for the specified assignment, if found. Assignment is a large MAC address block assignment, e.g. f0:9f:c2.

NewConsole returns a logger which returns to /dev/console and os.Stderr. Writes to /dev/console are non-blocking, i.e. messages will be discarded if /

ObtainOrRenew returns false when encountering a permanent error.

WaitUntilLoaded blocks until the database was loaded.

Kill shuts down the dnsmasq(8) process and returns once waitpid returns.