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fix dns issues with ipv6 and local bind

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Noah Masur 2024-04-14 03:43:58 +00:00
parent 520f0587c8
commit bf58cf62d3
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1 changed files with 24 additions and 8 deletions
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32
modules/nixos/services/bind.nix
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@ -5,7 +5,12 @@
# To set this on all home machines, I point my router's DNS resolver to the # To set this on all home machines, I point my router's DNS resolver to the
# local IP address of the machine running this service (swan). # local IP address of the machine running this service (swan).
{ config, pkgs, lib, ... }: {
config,
pkgs,
lib,
...
}:
let let
@ -18,8 +23,8 @@ let
]; ];
mkRecord = service: "${service} A ${localIp}"; mkRecord = service: "${service} A ${localIp}";
localRecords = lib.concatLines (map mkRecord localServices); localRecords = lib.concatLines (map mkRecord localServices);
in
in { {
config = lib.mkIf config.services.bind.enable { config = lib.mkIf config.services.bind.enable {
@ -31,12 +36,20 @@ in {
# Allow requests coming from these IPs. This way I don't somehow get # Allow requests coming from these IPs. This way I don't somehow get
# spammed with DNS requests coming from the Internet. # spammed with DNS requests coming from the Internet.
cacheNetworks = [ "127.0.0.0/24" "192.168.0.0/16" ]; cacheNetworks = [
"127.0.0.0/24"
"192.168.0.0/16"
"::1/128" # Required because IPv6 loopback now added to resolv.conf
# (see: https://github.com/NixOS/nixpkgs/pull/302228)
];
# When making normal DNS requests, forward them to Cloudflare to resolve. # When making normal DNS requests, forward them to Cloudflare to resolve.
forwarders = [ "1.1.1.1" "1.0.0.1" ]; forwarders = [
"1.1.1.1"
"1.0.0.1"
];
ipv4Only = true; ipv4Only = false;
# Use rpz zone as an override # Use rpz zone as an override
extraOptions = ''response-policy { zone "rpz"; };''; extraOptions = ''response-policy { zone "rpz"; };'';
@ -59,13 +72,16 @@ in {
''; '';
}; };
}; };
}; };
# We must allow DNS traffic to hit our machine as well # We must allow DNS traffic to hit our machine as well
networking.firewall.allowedTCPPorts = [ 53 ]; networking.firewall.allowedTCPPorts = [ 53 ];
networking.firewall.allowedUDPPorts = [ 53 ]; networking.firewall.allowedUDPPorts = [ 53 ];
# Set our own nameservers to ourselves
networking.nameservers = [
"127.0.0.1"
"::1"
];
}; };
} }