Problem resolving a domain
Ondřej Surý
ondrej at isc.org
Fri May 13 12:11:56 UTC 2022
Hi Rainer,
I believe this is unrelated to any upgrade. The nameservers for the domain are broken:
$ dig IN A myapplication.international.barclays.com @ns2.barcap.com.
; <<>> DiG 9.19.0-1+0~20220421.76+debian10~1.gbpa71ef8-Debian <<>> IN A myapplication.international.barclays.com @ns2.barcap.com.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26288
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 5
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1220
; COOKIE: 1154fcda62fc8122973932b0627e4a9e96eef4cf1d850adf (good)
;; QUESTION SECTION:
;myapplication.international.barclays.com. IN A
;; ANSWER SECTION:
myapplication.international.barclays.com. 900 IN CNAME myapplication.glbaa.barclays.com.
;; AUTHORITY SECTION:
glbaa.barclays.com. 900 IN NS ns22.barclays.net.
glbaa.barclays.com. 900 IN NS ns21.barclays.com.
glbaa.barclays.com. 900 IN NS ns24.barclays.net.
glbaa.barclays.com. 900 IN NS ns23.barclays.com.
;; ADDITIONAL SECTION:
ns21.barclays.com. 900 IN A 157.83.102.245
ns23.barclays.com. 900 IN A 157.83.126.245
ns22.barclays.net. 600 IN A 157.83.102.246
ns24.barclays.net. 600 IN A 157.83.126.246
;; Query time: 196 msec
;; SERVER: 141.228.196.129#53(ns2.barcap.com.) (UDP)
;; WHEN: Fri May 13 14:08:49 CEST 2022
;; MSG SIZE rcvd: 283
and the nameservers itself just timeout:
$ dig +timeout=1 +retries=0 IN A myapplication.glbaa.barclays.com. @ns21.barclays.com.
; <<>> DiG 9.19.0-1+0~20220421.76+debian10~1.gbpa71ef8-Debian <<>> +timeout +retries IN A myapplication.glbaa.barclays.com. @ns21.barclays.com.
;; global options: +cmd
;; connection timed out; no servers could be reached
DNSVIZ gives the same result:
https://dnsviz.net/d/myapplication.glbaa.barclays.com/dnssec/
• glbaa.barclays.com zone: The server(s) were not responsive to queries over UDP. (157.83.102.245, 157.83.102.246, 157.83.126.245, 157.83.126.246)
Ondrej
--
Ondřej Surý (He/Him)
ondrej at isc.org
My working hours and your working hours may be different. Please do not feel obligated to reply outside your normal working hours.
> On 13. 5. 2022, at 13:54, Rainer Duffner <rainer at ultra-secure.de> wrote:
>
> Hi,
>
> at work, I have a problem resolving the following domain:
>
> myapplication.international.barclays.com
>
>
> BIND 9.16.27, FreeBSD 12.3-P5.
> 2022Q2 ports.
>
>
> I copied the config to a VM at home - but it did not work there, either.
>
> I believe it must have happened on the update from BIND 9.16.26 to 9.16.27.
>
>
> options {
> directory "/usr/local/etc/namedb/working";
> pid-file "/var/run/named/pid";
> dump-file "/var/dump/named_dump.db";
> statistics-file "/var/stats/named.stats";
> allow-recursion {"rec";};
> allow-query-cache { localhost; "rec" ; };
> // CIS recommended:
> // serverid none;
> // dnssec-enable yes;
> // dnssec-validation auto;
> // dnssec-accept-expired no;
>
> listen-on { 192.168.1.61; };
>
> disable-empty-zone "255.255.255.255.IN-ADDR.ARPA";
> disable-empty-zone "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA";
> disable-empty-zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA";
>
> };
>
> acl rec {
> 127.0.0.0/8;
> 192.168.1.0/24;
> ::1;
> };
>
> /* Serving the following zones locally will prevent any queries
> for these zones leaving your network and going to the root
> name servers. This has two significant advantages:
> 1. Faster local resolution for your users
> 2. No spurious traffic will be sent from your network to the roots
> */
> // RFCs 1912, 5735 and 6303 (and BCP 32 for localhost)
> zone "localhost" { type master; file "/usr/local/etc/namedb/master/localhost-forward.db"; };
> zone "127.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/localhost-reverse.db"; };
> zone "255.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // RFC 1912-style zone for IPv6 localhost address (RFC 6303)
> zone "0.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/localhost-reverse.db"; };
>
> // "This" Network (RFCs 1912, 5735 and 6303)
> zone "0.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // Private Use Networks (RFCs 1918, 5735 and 6303)
> zone "10.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "16.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "17.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "18.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "19.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "20.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "21.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "22.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "23.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "24.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "25.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "26.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "27.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "28.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "29.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "30.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "31.172.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "168.192.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // Shared Address Space (RFC 6598)
> zone "64.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "65.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "66.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "67.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "68.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "69.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "70.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "71.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "72.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "73.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "74.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "75.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "76.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "77.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "78.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "79.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "80.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "81.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "82.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "83.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "84.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "85.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "86.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "87.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "88.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "89.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "90.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "91.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "92.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "93.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "94.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "95.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "96.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "97.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "98.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "99.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "100.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "101.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "102.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "103.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "104.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "105.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "106.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "107.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "108.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "109.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "110.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "111.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "112.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "113.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "114.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "115.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "116.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "117.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "118.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "119.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "120.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "121.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "122.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "123.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "124.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "125.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "126.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "127.100.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // Link-local/APIPA (RFCs 3927, 5735 and 6303)
> zone "254.169.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // IETF protocol assignments (RFCs 5735 and 5736)
> zone "0.0.192.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // TEST-NET-[1-3] for Documentation (RFCs 5735, 5737 and 6303)
> zone "2.0.192.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "100.51.198.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "113.0.203.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // IPv6 Example Range for Documentation (RFCs 3849 and 6303)
> zone "8.b.d.0.1.0.0.2.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // Domain Names for Documentation and Testing (BCP 32)
> zone "test" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "example" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "invalid" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "example.com" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "example.net" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "example.org" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // Router Benchmark Testing (RFCs 2544 and 5735)
> zone "18.198.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "19.198.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // IANA Reserved - Old Class E Space (RFC 5735)
> zone "240.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "241.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "242.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "243.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "244.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "245.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "246.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "247.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "248.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "249.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "250.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "251.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "252.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "253.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "254.in-addr.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // IPv6 Unassigned Addresses (RFC 4291)
> zone "1.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "3.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "4.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "5.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "6.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "7.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "8.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "9.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "a.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "b.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "c.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "d.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "e.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "0.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "1.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "2.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "3.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "4.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "5.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "6.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "7.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "8.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "9.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "a.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "b.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "0.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "1.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "2.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "3.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "4.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "5.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "6.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "7.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // IPv6 ULA (RFCs 4193 and 6303)
> zone "c.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "d.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // IPv6 Link Local (RFCs 4291 and 6303)
> zone "8.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "9.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "a.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "b.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // IPv6 Deprecated Site-Local Addresses (RFCs 3879 and 6303)
> zone "c.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "d.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "e.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
> zone "f.e.f.ip6.arpa" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
> // IP6.INT is Deprecated (RFC 4159)
> zone "ip6.int" { type master; file "/usr/local/etc/namedb/master/empty.db"; };
>
>
> include "/usr/local/etc/namedb/log.conf“;
> (bind-unbound-test <namedb>) 0 # drill @192.168.1.61 myapplication.international.barclays.com
> ;; ->>HEADER<<- opcode: QUERY, rcode: SERVFAIL, id: 3215
> ;; flags: qr rd ra ; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
> ;; QUESTION SECTION:
> ;; myapplication.international.barclays.com. IN A
>
> ;; ANSWER SECTION:
>
> ;; AUTHORITY SECTION:
>
> ;; ADDITIONAL SECTION:
>
> ;; Query time: 10056 msec
> ;; SERVER: 192.168.1.61
> ;; WHEN: Fri May 13 13:50:00 2022
> ;; MSG SIZE rcvd: 58
> (bind-unbound-test <namedb>) 0 #
>
>
>
>
>
>
>
>
>
> --
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