1 device making thousands of PTR requests + DNS Masq warnings

I have a Philips soundbar that looks to me making PTR requests every 3 seconds, none stop.
And I also have a DNS masq warning:

Maximum number of concurrent DNS queries reached (max: 150)

My assumption is the warning is a result of the 20,000+ requests from the soundbar?

Why would the soundbar do this?
It is querying 192.168.0.1, which is my router.



You would need to inquire with the soundbar software developers.

Given that the queries are every three seconds, and they should be answered locally (i.e. in msec), this should not lead to this warning.

How is your Pi-hole replying to the PTR requests?

dig -x 192.168.0.1 @127.0.0.1

Fair point

As it should I think

pi@pihole:~ $ dig -x 192.168.0.1 @127.0.0.1

; <<>> DiG 9.11.5-P4-5.1+deb10u6-Raspbian <<>> -x 192.168.0.1 @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24713
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;1.0.168.192.in-addr.arpa.      IN      PTR

;; ANSWER SECTION:
1.0.168.192.in-addr.arpa. 0     IN      PTR     skyqhub.lan.

;; Query time: 5 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sun Jan 23 22:00:40 GMT 2022
;; MSG SIZE  rcvd: 7

any other ideas?

Please upload a debug log and post just the token URL that is generated after the log is uploaded by running the following command from the Pi-hole host terminal:

pihole -d

or do it through the Web interface:

Tools > Generate Debug Log

https://tricorder.pi-hole.net/eegwI2rG/

Unfortunately, Pi-hole has no control over the queries it receives. It can only answer, and in this case the answer is the answer you have specified. I would visit the forums for the soundbar and see if there is any insight there.

*** [ DIAGNOSING ]: Pi-hole log
-rw-r--r-- 1 pihole pihole 11M Jan 28 22:27 /var/log/pihole.log
   -----head of pihole.log------
   Jan 28 00:00:21 dnsmasq[17838]: query[PTR] 1.0.168.192.in-addr.arpa from 192.168.0.70
   Jan 28 00:00:21 dnsmasq[17838]: /etc/pihole/custom.list 192.168.0.1 is skyqhub.lan
   Jan 28 00:00:24 dnsmasq[17838]: query[PTR] 1.0.168.192.in-addr.arpa from 192.168.0.70
   Jan 28 00:00:24 dnsmasq[17838]: /etc/pihole/custom.list 192.168.0.1 is skyqhub.lan

Unfortunately I can't find any useful forums, and Philips customer service / tech support is useless.

Did the debug log look ok?
I still see the dnsmasq warnings...

Warning in dnsmasq core:
no address range available for DHCP request via lo
Maximum number of concurrent DNS queries reached (max: 150)

Still seeing the same DNS Masq warnings here,

And you will continue to see the same warnings as long as your soundbar continues to repeatedly request the same domain. This is outside the control of Pi-hole, which can only respond to queries it receives. That is what Pi-hole is correctly doing.

Understood now thanks.
It wasnt clear to me if the warnings were due to the soundbar.

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