grafana: useDHCP

hosts/storage-ng/grafana/configuration.nix

@@ -9,6 +9,8 @@
   networking.hostName = "grafana";
   networking.useNetworkd = true;
   networking.defaultGateway = "172.22.99.4";
+  # Needs IPv4 for obtaining certs?
+  networking.useDHCP = lib.mkForce true;
 
   # List packages installed in system profile. To search, run:
   # $ nix search wget