modules/networking.nix

@@ -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
     '';
   };
 }