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fix: disable DNSSEC for now because of an issue in
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Browse source 
systemd https://github.com/systemd/systemd/issues/10579

Without this change, there are random SERVFAIL responses with Greenbaum DNS
when using allow-downgrade. Fixes DNS queries for lev-1.int.greenbaum.zone

❯ dig obs-portal.svc.e5756d08-36fd-424b-f8bc-acdb92ca7b82.lev-1.int.greenbaum.zone

; <<>> DiG 9.18.19 <<>> obs-portal.svc.e5756d08-36fd-424b-f8bc-acdb92ca7b82.lev-1.int.greenbaum.zone
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 1871
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;obs-portal.svc.e5756d08-36fd-424b-f8bc-acdb92ca7b82.lev-1.int.greenbaum.zone. IN A

;; ANSWER SECTION:
obs-portal.svc.e5756d08-36fd-424b-f8bc-acdb92ca7b82.lev-1.int.greenbaum.zone. 22 IN A 192.168.128.82

;; Query time: 105 msec
;; SERVER: 127.0.0.53#53(127.0.0.53) (UDP)
;; WHEN: Thu Nov 09 10:38:02 UTC 2023
;; MSG SIZE  rcvd: 121
This commit is contained in:
teutat3s 2023-11-09 11:38:28 +01:00 committed by b12f
parent 3e0af35c75
commit d5922ff2b8
Signed by: pub.solar gitea
GPG key ID: F0332B04B7054873
1 changed files with 3 additions and 0 deletions
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3
modules/networking.nix
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@ -27,11 +27,14 @@
services.resolved = {
enable = true;
# DNSSEC=false because of random SERVFAIL responses with Greenbaum DNS
# when using allow-downgrade, see https://github.com/systemd/systemd/issues/10579
extraConfig = ''
DNS=193.110.81.0#dns0.eu 185.253.5.0#dns0.eu 2a0f:fc80::#dns0.eu 2a0f:fc81::#dns0.eu 9.9.9.9#dns.quad9.net 149.112.112.112#dns.quad9.net 2620:fe::fe#dns.quad9.net 2620:fe::9#dns.quad9.net
FallbackDNS=5.1.66.255#dot.ffmuc.net 185.150.99.255#dot.ffmuc.net 2001:678:e68:f000::#dot.ffmuc.net 2001:678:ed0:f000::#dot.ffmuc.net
Domains=~.
DNSOverTLS=yes
DNSSEC=false
'';
};
}