dhcpmgr is a server manager for DHCP. DHCP is a protocol for automatically configuring IP addresses on the local network. When a computer hosts a dhcpmgr server on a local network, other nearby computers can acquire a unique IP address from it automatically. Compatible clients include dhclient (from netutils) and netmgr.


  • libsystem


Install dhcpmgr. Then configure the network parameters in /etc/dhcpmgr.conf (described below). Finally, start the manager with sudo startctl start dhcpmgr. To run on startup, run sudo startctl install dhcpmgr.


dhcpmgr’s configuration is stored at /etc/dhcpmgr.conf. This is a TOML file with the parameters for how to allocate addresses.

  • interface defines the interface to host on. This can be a device path or UUID. If not set, it will pick a random interface.
  • firstaddr and lastaddr define the IP range to assign. This should be in one of the private IP blocks (10.x.x.x, 192.168.x.x, 172.xx.x.x). For most networks, the first address should be x.x.x.2, and the last should be x.x.x.254, which leaves room for the DHCP host at .1, and the broadcast address at .255.
  • netmask defines the network mask for the address. If not provided, it will be inferred from the address range.
  • gateway defines the gateway (router) address for the network. If not provided, clients won’t be able to connect to the Internet.
  • dns defines the domain name servers to use. If not provided, clients won’t be able to use domain names.
  • leasetime defines how long a DHCP lease lasts, in seconds. Set to 0 to never expire.
  • allowrequests determines whether a client can request its own IP address.
  • storeassignments determines whether assignments are stored to a file on the server.
  • forcereassign determines whether to always assign a new address when a client requests one.
  • The static section lists forced static assignments for certain computer IDs.
  • The options section can be used to add any extra options to the response, such as network boot parameters.

Here is an example configuration for a basic DHCP server on the subnet, with some static IPs and a boot configuration:

interface = "/back"
firstaddr = ""
lastaddr = ""
gateway = ""
dns = [""]
leasetime = 86400
allowrequests = true
storeassignments = false
forcereassign = false

    25 = ""
    28 = ""

    bootServers = [""]
    bootFile = "/boot.lua"