This is a probably not RFC-compliant DHCPv6 server for a very narrow use case: assigning fixed IPv6 addresses based entirely on the client's MAC address. Note that this DHCPv6 server does not respect or account for leases.
You should only use this if:
-
You have clients you can't configure to use regular SLAAC with addresses following the usual EUI-64 scheme
-
You still need these clients to have stable IP addresses, even if they don't keep any state (frequent OS wipes!)
We use this for macs where reprovisioning isn't 100% reliable, so we want them to get the same IP address even if none of the scripts have run. This is why we wrote this horrible hack.
go build .
sudo ./dhcpv6macd -interface enp2s0 -base-address 2001:db8:0123:4567::
There is also a NixOS module in the flake.nix.
See the flake.nix for a NixOS test involving router and a client.
The prefix is assumed to be at least a /80. The MAC address is simply concatenated onto the prefix.
This does not provide:
- Router advertisements (we use systemd-networkd for this)
- DHCPv4 (we use systemd-networkd for this)
- Options for DNS, NTP, etc
This code is GPL-3, and based on Adguard's AdGuardHome DHCPv6 server: https://github.com/AdguardTeam/AdGuardHome/blob/167b1125113c86e6304471d80d983c17f0f707e3/internal/dhcpd/v6_unix.go.