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auto generate dhcp start and end address

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This commit is contained in:
Sagar Ch 2024-06-04 20:18:00 +00:00
parent 392375b046
commit e4975a4cec
2 changed files with 11 additions and 1 deletions
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10
nixos/network/config.nix
View file

@ -36,6 +36,14 @@ let
lanInterfaceIPAddress = calc.cidr.host 1 lanCfg.ipv4.range; lanInterfaceIPAddress = calc.cidr.host 1 lanCfg.ipv4.range;
netmask = calc.cidr.netmask lanCfg.ipv4.range; netmask = calc.cidr.netmask lanCfg.ipv4.range;
networkPrefix = builtins.elemAt (lib.splitString "/" lanCfg.ipv4.range) 1; networkPrefix = builtins.elemAt (lib.splitString "/" lanCfg.ipv4.range) 1;
dhcpStartAddress =
if (lanCfg.ipv4.dhcp.startAddress != null)
then lanCfg.ipv4.dhcp.startAddress
else (calc.cidr.host 2 lanCfg.ipv4.range);
dhcpEndAddress =
if (lanCfg.ipv4.dhcp.endAddress != null)
then lanCfg.ipv4.dhcp.endAddress
else (calc.cidr.host ((calc.cidr.capacity lanCfg.ipv4.range) - 2) lanCfg.ipv4.range);
createLanInterface = pkgs.writeShellScript "create-lan-${lanCfg.name}-vmix" '' createLanInterface = pkgs.writeShellScript "create-lan-${lanCfg.name}-vmix" ''
ip link add ${lanInterfaceName} type bridge ip link add ${lanInterfaceName} type bridge
@ -47,7 +55,7 @@ let
lanDomainName = "${lanCfg.name}.vmix"; lanDomainName = "${lanCfg.name}.vmix";
lanDnsmasqConf = pkgs.writeText "dnsmasq-${lanCfg.name}.conf" ('' lanDnsmasqConf = pkgs.writeText "dnsmasq-${lanCfg.name}.conf" (''
listen-address=${lanInterfaceIPAddress} listen-address=${lanInterfaceIPAddress}
dhcp-range=${lanCfg.ipv4.dhcp.startAddress},${lanCfg.ipv4.dhcp.endAddress},${netmask},12h dhcp-range=${dhcpStartAddress},${dhcpEndAddress},${netmask},12h
interface=${lanInterfaceName} interface=${lanInterfaceName}
bind-interfaces bind-interfaces
except-interface=lo except-interface=lo

2
nixos/network/options.nix
View file

@ -118,11 +118,13 @@ with vmixLib.network;
dhcp.startAddress = mkOption { dhcp.startAddress = mkOption {
type = types.nullOr (types.strMatching regex.ipv4); type = types.nullOr (types.strMatching regex.ipv4);
description = "Starting IP Address for DHCP clients."; description = "Starting IP Address for DHCP clients.";
default = null;
}; };
dhcp.endAddress = mkOption { dhcp.endAddress = mkOption {
type = types.nullOr (types.strMatching regex.ipv4); type = types.nullOr (types.strMatching regex.ipv4);
description = "Ending IP Address for DHCP clients."; description = "Ending IP Address for DHCP clients.";
default = null;
}; };
dns.upstream = mkOption { dns.upstream = mkOption {