infrastructure/modules/dgn-network.nix

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{
config,
lib,
meta,
name,
...
}:
let
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inherit (lib) mapAttrs' mkEnableOption mkIf;
net' = meta.network.${name};
mkAddress = { address, prefixLength, ... }: "${address}/${builtins.toString prefixLength}";
mkRoute = gateway: {
routeConfig = {
Gateway = gateway;
GatewayOnLink = true;
};
};
mkInterface = interface: net: {
name = "10-${interface}";
value = {
name = interface;
address = builtins.map mkAddress (net.ipv4 ++ net.ipv6);
routes = builtins.map mkRoute net.gateways;
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inherit (net) DHCP dns;
};
};
cfg = config.dgn-network;
in
{
options.dgn-network.enable = mkEnableOption "automatic network configuration based on metadata" // {
default = true;
};
config = mkIf cfg.enable {
networking = {
inherit (net') hostId;
hostName = name;
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domain = "${meta.nodes.${name}.site}.infra.dgnum.eu";
useNetworkd = true;
firewall.logRefusedConnections = false;
};
systemd.network.networks = mapAttrs' mkInterface net'.interfaces;
};
}