nilsandClaude Sonnet 5.5
dcef7665b4
router.* schema (wan, lans, dns.forwarders) compiled to systemd-networkd, a generated nftables ruleset with NAT, Kea DHCPv4 and Unbound, plus build-time assertions against lock-out and interface conflicts. tests/basic.nix is a three-node VM test (upstream/router/client) covering WAN DHCP, LAN DHCP and DNS, NAT, WAN-deny and LAN SSH/ping. `nix run .#lab` boots the same topology in tmux with one console pane per VM and the driver REPL. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
36 lines
1021 B
Nix
36 lines
1021 B
Nix
{ config, lib, ... }:
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let
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cfg = config.router;
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dhcpLans = lib.filter (l: l.dhcp.enable) (lib.attrValues cfg.lans);
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in
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{
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config = lib.mkIf (cfg.enable && dhcpLans != [ ]) {
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services.kea.dhcp4 = {
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enable = true;
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settings = {
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interfaces-config = {
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interfaces = map (l: l.interface) dhcpLans;
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# Interfaces are configured asynchronously by networkd.
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re-detect = true;
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};
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lease-database = {
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type = "memfile";
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persist = true;
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name = "/var/lib/kea/dhcp4.leases";
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};
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valid-lifetime = 3600;
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subnet4 = lib.imap1 (id: l: {
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inherit id;
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inherit (l.ipv4) subnet;
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interface = l.interface;
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pools = [ { pool = "${l.dhcp.pool.start} - ${l.dhcp.pool.end}"; } ];
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option-data = [
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{ name = "routers"; data = l.ipv4.address; }
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{ name = "domain-name-servers"; data = l.ipv4.address; }
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];
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}) dhcpLans;
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};
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};
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};
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}
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