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NixOS Networking

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SenderMessageTime
25 May 2021
@alexey96:matrix.orgalexey96and have opened TCP and UDP ports 5317:43:08
@alexey96:matrix.orgalexey96It is in loop indeed. Have just checked log file: May 25 20:44:22 dnsmasq[27139]: forwarded router.asus.com.home to 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: query[A] router.asus.com.home from 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: forwarded router.asus.com.home to 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: query[A] router.asus.com.home from 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: forwarded router.asus.com.home to 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: query[A] router.asus.com.home from 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: forwarded router.asus.com.home to 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: query[A] router.asus.com.home from 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: forwarded router.asus.com.home to 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: query[A] router.asus.com.home from 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: forwarded router.asus.com.home to 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: query[A] router.asus.com.home from 192.168.1.1 May 25 20:44:22 dnsmasq[27139]: forwarded router.asus.com.home to 192.168.1.1 17:45:22
@alexey96:matrix.orgalexey96I have a stock AsusWRT on my router and i have no way of disabling it broadcasting itself as secondary DNS for local domain17:47:34
@alexey96:matrix.orgalexey96So the only option to prevent this looping is removing it from resolv.conf on the NixOS machine and i have trouble with this17:48:29
@alexey96:matrix.orgalexey96 * So the only option to prevent this looping is removing ip 192.168.1.1 from resolv.conf on the NixOS machine and i have trouble with this17:49:03
@alexey96:matrix.orgalexey96

Network and dnsmasq configs: # DNS server
services.dnsmasq.enable = true;
services.dnsmasq.extraConfig = ''

domain-needed
bogus-priv
no-resolv

server=208.67.220.220
server=8.8.8.8

listen-address=::1,127.0.0.1,192.168.1.100
bind-interfaces

cache-size=10000
log-queries
log-facility=/tmp/ad-block.log
local-ttl=300

conf-file=/etc/nixos/assets/hosts-blocklists/domains.txt
addn-hosts=/etc/nixos/assets/hosts-blocklists/hostnames.txt
# address=/nixos.home/192.168.1.100

'';

17:51:21
@alexey96:matrix.orgalexey96 networking.useDHCP = false; networking.interfaces.eno0.useDHCP = true; networking.interfaces.wlp2s0.useDHCP = true; networking.nameservers = [ "127.0.0.1" "::1" ]; 17:52:55
@andi:kack.itandi- That log is interesting. As you've set no-resolv it should only use the server statements to do the resolving. What arguments is dnsmasq launched with? 17:53:04
@alexey96:matrix.orgalexey96How can i get that information?17:54:46
@andi:kack.itandi- systemctl cat dnsmasq should show you the cmdline that process was launched with 17:55:03
@andi:kack.itandi- or rather systemctl status dnsmasq 17:55:12
@alexey96:matrix.orgalexey96/nix/store/zsdx9lmnjma8xdv2acz4ha0hi45wkxvh-dnsmasq-2.85/bin/dnsmasq -k --enable-dbus --user=dnsmasq -C /nix/store/x4nvgi8mz9vj1myfb6hbsd8vh7zxlm57-dnsmasq.conf17:56:10
@alexey96:matrix.orgalexey96 * So the only option I see to prevent this looping is removing ip 192.168.1.1 from resolv.conf on the NixOS machine and i have trouble with this18:04:06
@andi:kack.itandi-alexey96: try passing a dummy resolv.conf to dnsmasq via the resolv-file=... argument.. I somehow suspec that server=.. isn't doing exactly the right thing. Dnsmasq might fall back to libc based DNS and then end up on your router again?18:04:14
@andi:kack.itandi-

In the config block above you could write

resolv-file=${pkgs.writeText "dnsmasq-resolv.conf" "nameserver 8.8.8.8"}
18:05:21
@andi:kack.itandi-(Obviously add the v6 address as well I was just lazy)18:05:53
@alexey96:matrix.orgalexey96
In reply to @andi:kack.it

In the config block above you could write

resolv-file=${pkgs.writeText "dnsmasq-resolv.conf" "nameserver 8.8.8.8"}
Had no effect. dsnmasq-resolve.conf didnt change, still 100% cpu usage 		18:13:24
@alexey96:matrix.orgalexey96

cat /etc/dnsmasq-resolv.conf

Generated by resolvconf

nameserver 192.168.1.100
nameserver 192.168.1.1

18:13:39
@andi:kack.itandi-what is that file relevant? I don't see it in the earlier pastes. Did you declare that?18:18:28
@alexey96:matrix.orgalexey96I didnt declare it anyway before. Shouldn't the resolv-file=... change it?18:26:50
@alexey96:matrix.orgalexey96 * I didnt declare it in anyway before. Shouldn't the resolv-file=... change it?18:27:05
@andi:kack.itandi-no, that only tells it which file to read. It shouldn't read that file on disk18:27:46
@alexey96:matrix.orgalexey96 So dnsmasq starts with paramaters: /nix/store/zsdx9lmnjma8xdv2acz4ha0hi45wkxvh-dnsmasq-2.85/bin/dnsmasq -k --enable-dbus --user=dnsmasq -C /nix/store/a48s6kwn7clmqz9kf8wmf648jj5j76z8-dnsmasq.conf 18:47:33
@alexey96:matrix.orgalexey96 
dhcp-leasefile=/var/lib/dnsmasq/dnsmasq.leases
conf-file=/etc/dnsmasq-conf.conf
resolv-file=/etc/dnsmasq-resolv.conf

domain-needed
bogus-priv
no-resolv
filterwin2k

server=208.67.220.220
server=8.8.8.8

listen-address=::1,127.0.0.1,192.168.1.100
bind-interfaces

cache-size=10000
log-queries
log-facility=/tmp/ad-block.log
local-ttl=300

resolv-file=/nix/store/ks8wii7ff51jb1f1ln0sdamwv6syy1v6-dnsmasq-resolv.conf
conf-file=/etc/nixos/assets/hosts-blocklists/domains.txt
addn-hosts=/etc/nixos/assets/hosts-blocklists/hostnames.txt
# address=/nixos.home/192.168.1.100
18:49:13
@alexey96:matrix.orgalexey96 * 
dhcp-leasefile=/var/lib/dnsmasq/dnsmasq.leases
conf-file=/etc/dnsmasq-conf.conf
resolv-file=/etc/dnsmasq-resolv.conf

domain-needed
bogus-priv
no-resolv
filterwin2k

server=208.67.220.220
server=8.8.8.8

listen-address=::1,127.0.0.1,192.168.1.100
bind-interfaces

cache-size=10000
log-queries
log-facility=/tmp/ad-block.log
local-ttl=300

resolv-file=/nix/store/ks8wii7ff51jb1f1ln0sdamwv6syy1v6-dnsmasq-resolv.conf
conf-file=/etc/nixos/assets/hosts-blocklists/domains.txt
addn-hosts=/etc/nixos/assets/hosts-blocklists/hostnames.txt
# address=/nixos.home/192.168.1.100
18:49:50
@alexey96:matrix.orgalexey96 * 
dhcp-leasefile=/var/lib/dnsmasq/dnsmasq.leases
conf-file=/etc/dnsmasq-conf.conf
resolv-file=/etc/dnsmasq-resolv.conf

domain-needed
bogus-priv
no-resolv
filterwin2k

server=208.67.220.220
server=8.8.8.8

listen-address=::1,127.0.0.1,192.168.1.100
bind-interfaces

cache-size=10000
log-queries
log-facility=/tmp/ad-block.log
local-ttl=300

resolv-file=/nix/store/ks8wii7ff51jb1f1ln0sdamwv6syy1v6-dnsmasq-resolv.conf
conf-file=/etc/nixos/assets/hosts-blocklists/domains.txt
addn-hosts=/etc/nixos/assets/hosts-blocklists/hostnames.txt
# address=/nixos.home/192.168.1.100
18:50:42
@alexey96:matrix.orgalexey96 * 
dhcp-leasefile=/var/lib/dnsmasq/dnsmasq.leases
conf-file=/etc/dnsmasq-conf.conf
resolv-file=/etc/dnsmasq-resolv.conf

domain-needed
bogus-priv
no-resolv
filterwin2k

server=208.67.220.220
server=8.8.8.8

listen-address=::1,127.0.0.1,192.168.1.100
bind-interfaces

cache-size=10000
log-queries
log-facility=/tmp/ad-block.log
local-ttl=300

resolv-file=/nix/store/ks8wii7ff51jb1f1ln0sdamwv6syy1v6-dnsmasq-resolv.conf
conf-file=/etc/nixos/assets/hosts-blocklists/domains.txt
addn-hosts=/etc/nixos/assets/hosts-blocklists/hostnames.txt
# address=/nixos.home/192.168.1.100
18:50:50
@alexey96:matrix.orgalexey96 * 
dhcp-leasefile=/var/lib/dnsmasq/dnsmasq.leases
conf-file=/etc/dnsmasq-conf.conf
resolv-file=/etc/dnsmasq-resolv.conf

domain-needed
bogus-priv
no-resolv
filterwin2k

server=208.67.220.220
server=8.8.8.8

listen-address=::1,127.0.0.1,192.168.1.100
bind-interfaces

cache-size=10000
log-queries
log-facility=/tmp/ad-block.log
local-ttl=300

resolv-file=/nix/store/ks8wii7ff51jb1f1ln0sdamwv6syy1v6-dnsmasq-resolv.conf
conf-file=/etc/nixos/assets/hosts-blocklists/domains.txt
addn-hosts=/etc/nixos/assets/hosts-blocklists/hostnames.txt
# address=/nixos.home/192.168.1.100
18:51:11
@alexey96:matrix.orgalexey96 *

cat /nix/store/a48s6kwn7clmqz9kf8wmf648jj5j76z8-dnsmasq.conf```
dhcp-leasefile=/var/lib/dnsmasq/dnsmasq.leases
conf-file=/etc/dnsmasq-conf.conf
resolv-file=/etc/dnsmasq-resolv.conf

domain-needed
bogus-priv
no-resolv
filterwin2k

server=208.67.220.220
server=8.8.8.8

listen-address=::1,127.0.0.1,192.168.1.100
bind-interfaces

cache-size=10000
log-queries
log-facility=/tmp/ad-block.log
local-ttl=300

resolv-file=/nix/store/ks8wii7ff51jb1f1ln0sdamwv6syy1v6-dnsmasq-resolv.conf
conf-file=/etc/nixos/assets/hosts-blocklists/domains.txt
addn-hosts=/etc/nixos/assets/hosts-blocklists/hostnames.txt

address=/nixos.home/192.168.1.100

18:51:19
@alexey96:matrix.orgalexey96 *

cat /nix/store/a48s6kwn7clmqz9kf8wmf648jj5j76z8-dnsmasq.conf ```
dhcp-leasefile=/var/lib/dnsmasq/dnsmasq.leases
conf-file=/etc/dnsmasq-conf.conf
resolv-file=/etc/dnsmasq-resolv.conf

domain-needed
bogus-priv
no-resolv
filterwin2k

server=208.67.220.220
server=8.8.8.8

listen-address=::1,127.0.0.1,192.168.1.100
bind-interfaces

cache-size=10000
log-queries
log-facility=/tmp/ad-block.log
local-ttl=300

resolv-file=/nix/store/ks8wii7ff51jb1f1ln0sdamwv6syy1v6-dnsmasq-resolv.conf
conf-file=/etc/nixos/assets/hosts-blocklists/domains.txt
addn-hosts=/etc/nixos/assets/hosts-blocklists/hostnames.txt

address=/nixos.home/192.168.1.100

18:51:26

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