this is the dhcp6c service we want

This commit is contained in:
Daniel Barlow 2023-09-24 23:29:30 +01:00
parent 1673a71831
commit c59a228955
11 changed files with 163 additions and 60 deletions

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@ -7,7 +7,7 @@
{ config, pkgs, lib, ... } :
let
inherit (pkgs.liminix.services) oneshot longrun;
inherit (pkgs.liminix.services) bundle oneshot longrun;
inherit (pkgs) serviceFns;
# EDIT: you can pick your preferred RFC1918 address space
# for NATted connections, if you don't like this one.
@ -25,6 +25,7 @@ in rec {
imports = [
../modules/bridge
../modules/dhcp6c
../modules/dnsmasq
../modules/firewall
../modules/hostapd
@ -95,11 +96,16 @@ in rec {
resolvconf = services.resolvconf;
inherit interface;
ranges = [
"${ipv4LocalNet}.10,${ipv4LocalNet}.240"
# ra-stateless: sends router advertisements with the O and A
"${ipv4LocalNet}.10,${ipv4LocalNet}.249"
# EDIT: ... maybe. In this example we use "ra-stateless",
# meaning dnsmasq sends router advertisements with the O and A
# bits set, and provides a stateless DHCP service. The client
# will use a SLAAC address, and use DHCP for other
# configuration information.
# If you didn't understand the preceding sentence then
# the default is _probably_ fine, but if you need
# a DHCP-only IPv6 network or some other different
# configuration, this is the place to change it.
"::,constructor:$(output ${interface} ifname),ra-stateless"
];
# EDIT: choose a domain name for the DNS names issued for your
@ -158,34 +164,37 @@ in rec {
services.packet_forwarding = svc.network.forward.build { };
services.dhcp6 =
let
name = "dhcp6c.wan";
in longrun {
inherit name;
notification-fd = 10;
run = ''
export SERVICE_STATE=/run/service-state/${name}
${pkgs.odhcp6c}/bin/odhcp6c -s ${pkgs.odhcp-script} -e -v -p /run/${name}.pid -P 48 $(output ${services.wan} ifname)
)
'';
dependencies = [ services.wan ];
};
# We expect the ISP uses DHCP6 to issue IPv6 addresses. There is a
# service to request address information in the form of a DHCP
# lease, and two dependent services that listen for updates to the
# DHCP address information and update the addresses of the WAN and
# LAN interfaces respectively.
services.acquire-lan-prefix =
let script = pkgs.callPackage ./acquire-delegated-prefix.nix { };
in longrun {
name = "acquire-lan-prefix";
run = "${script} /run/service-state/dhcp6c.wan $(output ${services.int} ifname)";
dependencies = [ services.dhcp6 ];
services.dhcp6c =
let client = svc.dhcp6c.client.build {
interface = services.wan;
};
services.acquire-wan-address =
let script = pkgs.callPackage ./acquire-wan-address.nix { };
in longrun {
name = "acquire-wan-address";
run = "${script} /run/service-state/dhcp6c.wan $(output ${services.wan} ifname)";
dependencies = [ services.dhcp6 ];
in bundle {
name = "dhcp6c";
contents = [
(svc.dhcp6c.prefix.build {
# if your ISP provides you a real IPv6 prefix for your local
# network (usually a /64 or /48 or something in between the
# two), this service subscribes to that "prefix delegation"
# information, and uses it to assign an address to the LAN
# device. dnsmasq will notice this address and use it to
# form the addresses it hands out to devices on the lan
inherit client;
interface = services.int;
})
(svc.dhcp6c.address.build {
# if your ISP provides you a regular global IPv6 address,
# this service subscribes to that information and assigns
# the address to the WAN device.
inherit client;
interface = services.wan;
})
];
};
defaultProfile.packages = with pkgs; [

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@ -9,7 +9,7 @@
{ config, pkgs, lib, ... } :
let
secrets = import ./rotuer-secrets.nix;
inherit (pkgs.liminix.services) oneshot longrun;
inherit (pkgs.liminix.services) oneshot longrun bundle;
inherit (pkgs) serviceFns;
svc = config.system.service;
wirelessConfig = {
@ -38,6 +38,7 @@ in rec {
../modules/network
../modules/ppp
../modules/dnsmasq
../modules/dhcp6c
../modules/firewall
../modules/hostapd
../modules/bridge
@ -154,39 +155,27 @@ in rec {
};
services.firewall = svc.firewall.build {
ruleset = import ./rotuer-firewall.nix;
ruleset = import ./demo-firewall.nix;
};
services.packet_forwarding = svc.network.forward.build { };
services.dhcp6 =
let
name = "dhcp6c.wan";
in longrun {
inherit name;
notification-fd = 10;
run = ''
export SERVICE_STATE=/run/service-state/${name}
${pkgs.odhcp6c}/bin/odhcp6c -s ${pkgs.odhcp-script} -e -v -p /run/${name}.pid -P 48 $(output ${services.wan} ifname)
)
'';
dependencies = [ services.wan ];
services.dhcp6c =
let client = svc.dhcp6c.client.build {
interface = services.wan;
};
services.acquire-lan-prefix =
let script = pkgs.callPackage ./acquire-delegated-prefix.nix { };
in longrun {
name = "acquire-lan-prefix";
run = "${script} /run/service-state/dhcp6c.wan $(output ${services.int} ifname)";
dependencies = [ services.dhcp6 ];
};
services.acquire-wan-address =
let script = pkgs.callPackage ./acquire-wan-address.nix { };
in longrun {
name = "acquire-wan-address";
run = "${script} /run/service-state/dhcp6c.wan $(output ${services.wan} ifname)";
dependencies = [ services.dhcp6 ];
in bundle {
name = "dhcp6c";
contents = [
(svc.dhcp6c.prefix.build {
inherit client;
interface = services.int;
})
(svc.dhcp6c.address.build {
inherit client;
interface = services.wan;
})
];
};
defaultProfile.packages = with pkgs; [

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@ -0,0 +1,16 @@
{
liminix
, lib
, callPackage
}:
{ client, interface } :
let
inherit (liminix.services) longrun;
inherit (lib) mkOption types;
name = "dhcp6c.addr.${client.name}.${interface.name}";
script = callPackage ./acquire-wan-address.nix { };
in longrun {
inherit name;
run = "${script} /run/service-state/${client.name} $(output ${interface} ifname)";
dependencies = [ client interface ];
}

21
modules/dhcp6c/client.nix Normal file
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@ -0,0 +1,21 @@
{
liminix
, lib
, odhcp6c
, odhcp-script
}:
{ interface } :
let
inherit (liminix.services) longrun;
inherit (lib) mkOption types;
name = "dhcp6c.${interface.name}";
in longrun {
inherit name;
notification-fd = 10;
run = ''
export SERVICE_STATE=/run/service-state/${name}
${odhcp6c}/bin/odhcp6c -s ${odhcp-script} -e -v -p /run/${name}.pid -P0 $(output ${interface} ifname)
)
'';
dependencies = [ interface ];
}

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@ -0,0 +1,52 @@
## DHCP6 client module
## ===================
##
## This is for use if you have an IPv6-capable upstream that provides
## address information and/or prefix delegation using DHCP6. It
## provides a service to request address information in the form of a
## DHCP lease, and two dependent services that listen for updates
## to the DHCP address information and can be used to update
## addresses of network interfaces that you want to assign those
## prefixes to
{ lib, pkgs, config, ...}:
let
inherit (lib) mkOption types;
inherit (pkgs.liminix.services) oneshot;
inherit (pkgs) liminix;
in
{
options = {
system.service.dhcp6c = {
client = mkOption { type = liminix.lib.types.serviceDefn; };
prefix = mkOption { type = liminix.lib.types.serviceDefn; };
address = mkOption { type = liminix.lib.types.serviceDefn; };
};
};
config.system.service.dhcp6c = {
client = liminix.callService ./client.nix {
interface = mkOption {
type = liminix.lib.types.interface;
description = "interface (usually WAN) to query for DHCP6";
};
};
address = liminix.callService ./address.nix {
client = mkOption {
type = types.anything; # liminix.lib.types.service;
};
interface = mkOption {
type = liminix.lib.types.interface;
description = "interface to assign the address to";
};
};
prefix = liminix.callService ./prefix.nix {
client = mkOption {
type = types.anything; # liminix.lib.types.service;
};
interface = mkOption {
type = liminix.lib.types.interface;
description = "interface to assign <prefix>::1 to";
};
};
};
}

16
modules/dhcp6c/prefix.nix Normal file
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@ -0,0 +1,16 @@
{
liminix
, lib
, callPackage
}:
{ client, interface } :
let
inherit (liminix.services) longrun;
inherit (lib) mkOption types;
name = "dhcp6c.prefix.${client.name}.${interface.name}";
script = callPackage ./acquire-delegated-prefix.nix { };
in longrun {
inherit name;
run = "${script} /run/service-state/${client.name} $(output ${interface} ifname)";
dependencies = [ client interface ];
}