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networking: add dhcpClientId option to set DHCP Client ID

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Ihar Hrachyshka 2025-08-10 21:19:51 -04:00
parent 8b720b9662
commit 05a5979906
4 changed files with 37 additions and 0 deletions
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19
modules/networking/default.nix
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@ -18,6 +18,9 @@ let
*${lib.escapeShellArg srv}*)
networksetup -setdnsservers ${lib.escapeShellArgs ([ srv ] ++ (emptyList cfg.dns))}
networksetup -setsearchdomains ${lib.escapeShellArgs ([ srv ] ++ (emptyList cfg.search))}
${optionalString (cfg.dhcpClientId != null) ''
networksetup -setdhcp ${lib.escapeShellArgs [ srv cfg.dhcpClientId ]}
''}
;;
esac
'') cfg.knownNetworkServices}
@ -133,6 +136,21 @@ in
'';
};
networking.dhcpClientId = mkOption {
type = types.nullOr types.str;
default = null;
example = "my-client-id";
description = ''
The DHCP client identifier to use when requesting an IP address from a DHCP server.
If this option is set, it will be used by the system when requesting an IP address.
If not set, no changes will be made.
Set to the string "empty" to clear any previously configured client ID
and restore the system default behavior.
'';
};
networking.dns = mkOption {
type = types.listOf types.str;
default = [];
@ -162,6 +180,7 @@ in
warnings = [
(mkIf (cfg.knownNetworkServices == [] && cfg.dns != []) "networking.knownNetworkServices is empty, dns servers will not be configured.")
(mkIf (cfg.knownNetworkServices == [] && cfg.search != []) "networking.knownNetworkServices is empty, dns searchdomains will not be configured.")
(mkIf (cfg.knownNetworkServices == [] && cfg.dhcpClientId != null) "networking.knownNetworkServices is empty, dhcp client ID will not be configured.")
];
system.activationScripts.networking.text = ''