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1{ config, lib, pkgs, ... }:
2{
3 # ipv6 from vodafone is really really flaky
4 boot.kernel.sysctl."net.ipv6.conf.et0.disable_ipv6" = 1;
5 # vodafone router drifts out of time
6 services.timesyncd.servers = [
7 "0.pool.ntp.org"
8 "1.pool.ntp.org"
9 "2.pool.ntp.org"
10 "3.pool.ntp.org"
11 ];
12 systemd.network.networks."50-et0" = {
13 matchConfig.Name = "et0";
14 DHCP = "ipv4";
15 # dhcpV4Config.UseDNS = false;
16 # dhcpV6Config.UseDNS = false;
17 linkConfig = {
18 RequiredForOnline = "routable";
19 };
20 networkConfig = {
21 LinkLocalAddressing = "no";
22 };
23 # dhcpV6Config = {
24 # PrefixDelegationHint = "::/60";
25 # };
26 # networkConfig = {
27 # IPv6AcceptRA = true;
28 # };
29 # ipv6PrefixDelegationConfig = {
30 # Managed = true;
31 # };
32 };
33 boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
34 systemd.network.networks."50-int0" = {
35 name = "int0";
36 address = [
37 "10.42.0.1/24"
38 ];
39 networkConfig = {
40 # IPForward = "yes";
41 # IPMasquerade = "both";
42 ConfigureWithoutCarrier = true;
43 DHCPServer = "yes";
44 # IPv6SendRA = "yes";
45 # DHCPPrefixDelegation = "yes";
46 };
47 dhcpServerStaticLeases = [
48 {
49 dhcpServerStaticLeaseConfig = {
50 Address = "10.42.0.4";
51 MACAddress = "3c:2a:f4:22:28:37";
52 };
53 }
54 ];
55 };
56 networking.networkmanager.unmanaged = [ "int0" ];
57 krebs.iptables.tables.filter.INPUT.rules = [
58 { predicate = "-i int0"; target = "ACCEPT"; }
59 ];
60 krebs.iptables.tables.filter.FORWARD.rules = [
61 { predicate = "-i int0"; target = "ACCEPT"; }
62 { predicate = "-o int0"; target = "ACCEPT"; }
63 { predicate = "-p ipv6-icmp"; target = "ACCEPT"; v4 = false; }
64 ];
65 krebs.iptables.tables.nat.PREROUTING.rules = lib.mkBefore [
66 { v6 = false; predicate = "-s 10.42.0.0/24"; target = "ACCEPT"; }
67 ];
68 krebs.iptables.tables.nat.POSTROUTING.rules = [
69 { v6 = false; predicate = "-s 10.42.0.0/24"; target = "MASQUERADE"; }
70 ];
71
72 networking.domain = "gg23";
73
74 networking.useHostResolvConf = false;
75 services.resolved.extraConfig = ''
76 DNSStubListener=no
77 '';
78 services.dnsmasq = {
79 enable = true;
80 resolveLocalQueries = false;
81
82 extraConfig = ''
83 local=/gg23/
84 domain=gg23
85 expand-hosts
86 listen-address=10.42.0.1
87 interface=int0
88 '';
89 };
90
91 environment.systemPackages = [
92 (pkgs.writers.writeDashBin "restart_router" ''
93 ${pkgs.mosquitto}/bin/mosquitto_pub -h localhost -t 'cmnd/router/POWER' -u gg23 -P gg23-mqtt -m OFF
94 sleep 2
95 ${pkgs.mosquitto}/bin/mosquitto_pub -h localhost -t 'cmnd/router/POWER' -u gg23 -P gg23-mqtt -m ON
96 '')
97 ];
98}