66 lines
1.8 KiB
Nix
66 lines
1.8 KiB
Nix
{ config, pkgs, ... }:
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with pkgs.lib;
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let
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inherit (pkgs) dhcpcd;
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# Don't start dhclient on explicitly configured interfaces or on
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# interfaces that are part of a bridge.
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ignoredInterfaces =
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map (i: i.name) (filter (i: i ? ipAddress && i.ipAddress != "" ) config.networking.interfaces)
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++ concatLists (attrValues (mapAttrs (n: v: v.interfaces) config.networking.bridges));
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# Config file adapted from the one that ships with dhcpcd.
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dhcpcdConf = pkgs.writeText "dhcpcd.conf"
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''
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# Inform the DHCP server of our hostname for DDNS.
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hostname
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# A list of options to request from the DHCP server.
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option domain_name_servers, domain_name, domain_search, host_name
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option classless_static_routes, ntp_servers, interface_mtu
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# A ServerID is required by RFC2131.
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require dhcp_server_identifier
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# A hook script is provided to lookup the hostname if not set by
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# the DHCP server, but it should not be run by default.
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nohook lookup-hostname
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# Ignore peth* devices; on Xen, they're renamed physical
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# Ethernet cards used for bridging. Likewise for vif* and tap*
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# (Xen) and virbr* and vnet* (libvirt).
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denyinterfaces ${toString ignoredInterfaces} peth* vif* tap* virbr* vnet*
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'';
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in
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{
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###### implementation
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config = mkIf config.networking.useDHCP {
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jobs.dhcpcd =
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{ startOn = "started network-interfaces";
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stopOn = "stopping network-interfaces";
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path = [ dhcpcd pkgs.nettools pkgs.openresolv ];
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exec = "dhcpcd --config ${dhcpcdConf} --background --persistent";
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daemonType = "daemon";
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};
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environment.systemPackages = [ dhcpcd ];
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powerManagement.resumeCommands =
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''
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${config.system.build.upstart}/sbin/restart dhcpcd
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'';
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};
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}
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