[Dnsmasq-discuss] Google's DNS and Insecure DS reply received, do upstream DNS servers support DNSSEC?
Simon Kelley
simon at thekelleys.org.uk
Sun Jul 29 22:43:16 BST 2018
; <<>> DiG 9.10.3-P4-Ubuntu <<>> @8.8.8.8 +dnssec DS myqnapcloud.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58059
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 512
;; QUESTION SECTION:
;myqnapcloud.com. IN DS
;; ANSWER SECTION:
myqnapcloud.com. 599 IN CNAME
qcloud-pr-frontend-1025300009.us-east-1.elb.amazonaws.com.
;; AUTHORITY SECTION:
us-east-1.elb.amazonaws.com. 23 IN SOA ns-1119.awsdns-11.org.
awsdns-hostmaster.amazon.com. 1 7200 900 1209600 60
;; Query time: 90 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Sun Jul 29 22:38:26 BST 2018
;; MSG SIZE rcvd: 194
Is all wrong. Even if there's a CNAME at the root of the zone, there
should also be a DS record there. (DS records are special and can
co-exist with a CNAME
http://dnsviz.net/d/myqnapcloud.com/dnssec/ lights up red too.
TL;DR I think that problem is the configuration of that domain/zone.
Cheers,
Simon.
On 28/07/18 18:48, Kevin Darbyshire-Bryant wrote:
> Greetings!
>
> This isn’t a new problem but curiosity/frustration has now got the better of me. I’ve a QNAP NAS box which registers itself under ‘waldorfdb.myqnapcloud.com’ with both IPv4 & IPv6 addresses.
>
> My home lan router provides DHCP & DNS service courtesy dnsmasq. Sometimes my local browser is unable to resolve the above domain name and the “Insecure DS reply received” message is seen in the router’s syslog:
>
> Sat Jul 28 18:13:49 2018 daemon.info dnsmasq[21675]: 1087 2a02:c7f:1231:2000::dc83/57269 query[A] waldorfdb.myqnapcloud.com from 2a02:c7f:1231:2000::dc83
> Sat Jul 28 18:13:49 2018 daemon.info dnsmasq[21675]: 1087 2a02:c7f:1231:2000::dc83/57269 forwarded waldorfdb.myqnapcloud.com to 8.8.4.4
> Sat Jul 28 18:13:49 2018 daemon.info dnsmasq[21675]: * 2a02:c7f:1231:2000::dc83/57269 dnssec-query[DS] myqnapcloud.com to 8.8.4.4
> Sat Jul 28 18:13:49 2018 daemon.warn dnsmasq[21675]: Insecure DS reply received, do upstream DNS servers support DNSSEC?
> Sat Jul 28 18:13:49 2018 daemon.info dnsmasq[21675]: * 2a02:c7f:1231:2000::dc83/57269 reply myqnapcloud.com is BOGUS DS
> Sat Jul 28 18:13:49 2018 daemon.info dnsmasq[21675]: 1087 2a02:c7f:1231:2000::dc83/57269 validation waldorfdb.myqnapcloud.com is BOGUS
> Sat Jul 28 18:13:49 2018 daemon.info dnsmasq[21675]: 1087 2a02:c7f:1231:2000::dc83/57269 reply waldorfdb.myqnapcloud.com is 151.227.238.60
> Sat Jul 28 18:13:49 2018 daemon.info dnsmasq[21675]: 1088 192.168.219.142/51181 query[A] waldorfdb.myqnapcloud.com from 192.168.219.142
> Sat Jul 28 18:13:49 2018 daemon.info dnsmasq[21675]: 1088 192.168.219.142/51181 forwarded waldorfdb.myqnapcloud.com to 8.8.4.4
> Sat Jul 28 18:13:49 2018 daemon.info dnsmasq[21675]: * 192.168.219.142/51181 dnssec-query[DS] myqnapcloud.com to 8.8.4.4
> Sat Jul 28 18:13:50 2018 daemon.warn dnsmasq[21675]: Insecure DS reply received, do upstream DNS servers support DNSSEC?
> Sat Jul 28 18:13:50 2018 daemon.info dnsmasq[21675]: * 192.168.219.142/51181 reply myqnapcloud.com is BOGUS DS
> Sat Jul 28 18:13:50 2018 daemon.info dnsmasq[21675]: 1088 192.168.219.142/51181 validation waldorfdb.myqnapcloud.com is BOGUS
> Sat Jul 28 18:13:50 2018 daemon.info dnsmasq[21675]: 1088 192.168.219.142/51181 reply waldorfdb.myqnapcloud.com is 151.227.238.60
>
> Curiously a few minutes later and all is well, or well enough that my client gets an answer:
>
> Sat Jul 28 18:16:24 2018 daemon.info dnsmasq[21675]: 1121 2a02:c7f:1231:2000::dc83/51183 query[A] waldorfdb.myqnapcloud.com from 2a02:c7f:1231:2000::dc83
> Sat Jul 28 18:16:24 2018 daemon.info dnsmasq[21675]: 1121 2a02:c7f:1231:2000::dc83/51183 forwarded waldorfdb.myqnapcloud.com to 2001:4860:4860::8844
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: * 2a02:c7f:1231:2000::dc83/51183 dnssec-query[DS] myqnapcloud.com to 2001:4860:4860::8844
> Sat Jul 28 18:16:25 2018 daemon.warn dnsmasq[21675]: Insecure DS reply received, do upstream DNS servers support DNSSEC?
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: * 2a02:c7f:1231:2000::dc83/51183 reply myqnapcloud.com is BOGUS DS
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: 1121 2a02:c7f:1231:2000::dc83/51183 validation waldorfdb.myqnapcloud.com is BOGUS
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: 1121 2a02:c7f:1231:2000::dc83/51183 reply waldorfdb.myqnapcloud.com is 151.227.238.60
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: 1122 192.168.219.142/59027 query[A] waldorfdb.myqnapcloud.com from 192.168.219.142
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: 1122 192.168.219.142/59027 forwarded waldorfdb.myqnapcloud.com to 2001:4860:4860::8844
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: * 192.168.219.142/59027 dnssec-query[DS] myqnapcloud.com to 2001:4860:4860::8844
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: * 192.168.219.142/59027 reply myqnapcloud.com is no DS
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: 1122 192.168.219.142/59027 validation result is INSECURE
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: 1122 192.168.219.142/59027 reply waldorfdb.myqnapcloud.com is 151.227.238.60
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: 1123 2a02:c7f:1231:2000::dc83/59028 query[AAAA] waldorfdb.myqnapcloud.com from 2a02:c7f:1231:2000::dc83
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: 1123 2a02:c7f:1231:2000::dc83/59028 forwarded waldorfdb.myqnapcloud.com to 2001:4860:4860::8844
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: 1123 2a02:c7f:1231:2000::dc83/59028 validation result is INSECURE
> Sat Jul 28 18:16:25 2018 daemon.info dnsmasq[21675]: 1123 2a02:c7f:1231:2000::dc83/59028 reply waldorfdb.myqnapcloud.com is 2a02:c7f:1231:2000::c
>
>
> I only seem to see this behaviour if using Google's public DNS.
>
> Anyone else seeing this sort of thing? Help! :-) I’m at your disposal.
>
> Cheers,
>
> Kevin D-B
>
> 012C ACB2 28C6 C53E 9775 9123 B3A2 389B 9DE2 334A
>
>
>
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