Problem resolving a domain
Paul Stead
paul.stead at gmail.com
Fri May 13 12:58:27 UTC 2022
Further to this, I've discovered that disabling DNS cookies also seems to
help with resolution -
$ dig +nocookie +timeout=1 +retries=0 IN A myapplication.glbaa.barclays.com.
@ns21.barclays.com.
Maybe the send-cookie option could be investigated? YMMV..
On a side note other recursive DNS software seem to fall back gracefully
and resolve these problems
Paul
On Fri, 13 May 2022 at 13:51, Paul Stead <paul.stead at gmail.com> wrote:
> I have noticed this, too,
>
> The problem seems to be related to edns - disabling edns for the upstream
> servers looks to resolve the issue, this can be seen with later versions of
> dig -
>
> $ dig *+noedns* +timeout=1 +retries=0 IN A
> myapplication.glbaa.barclays.com. @ns21.barclays.com.
>
> I have config along the lines of -
>
> server 157.83.102.245 {
> edns no;
> };
>
> for each of the problematic upstreams. I contacted Barclays a few months
> ago about this, but never got a solid response.
>
> Paul
>
> On Fri, 13 May 2022 at 13:12, Ondřej Surý <ondrej at isc.org> wrote:
>
>> 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 #
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > --
>> > Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe
>> from this list
>> >
>> > ISC funds the development of this software with paid support
>> subscriptions. Contact us at https://www.isc.org/contact/ for more
>> information.
>> >
>> >
>> > bind-users mailing list
>> > bind-users at lists.isc.org
>> > https://lists.isc.org/mailman/listinfo/bind-users
>>
>> --
>> Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe
>> from this list
>>
>> ISC funds the development of this software with paid support
>> subscriptions. Contact us at https://www.isc.org/contact/ for more
>> information.
>>
>>
>> bind-users mailing list
>> bind-users at lists.isc.org
>> https://lists.isc.org/mailman/listinfo/bind-users
>>
>
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