Pi Hole blocks Samsung Galaxy WiFi DNS occasionally

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1

For the past couple of weeks, my Galaxy S9 has been losing DNS, i.e., the WiFi icon shows with an exclamation point and a message that Internet may not be available. It tends to clear out. I'm not sure which log entry pinpoints the IP but a few I see are:

Aug 22 20:12:10 dnsmasq[540]: query[A] dls1prd.di.atlas.samsung.com from 192.168.0.171
Aug 22 20:12:10 dnsmasq[540]: cached dls1prd.di.atlas.samsung.com is <CNAME>
Aug 22 20:12:10 dnsmasq[540]: forwarded dls1prd.di.atlas.samsung.com to 1.0.0.1
Aug 22 20:12:10 dnsmasq[540]: reply dls1prd.di.atlas.samsung.com is <CNAME>
query[A] device-metrics-us.amazon.com from 192.168.0.123
Aug 22 20:16:38 dnsmasq[540]: query[A] gld.push.samsungosp.com from 192.168.0.171
Aug 22 20:16:38 dnsmasq[540]: forwarded gld.push.samsungosp.com to 1.0.0.1
Aug 22 20:16:38 dnsmasq[540]: reply gld.push.samsungosp.com is <CNAME>
Aug 22 20:17:48 dnsmasq[540]: query[A] eula.samsungiotcloud.com from 192.168.0.171
Aug 22 20:17:48 dnsmasq[540]: forwarded eula.samsungiotcloud.com to 1.0.0.1
Aug 22 20:17:48 dnsmasq[540]: reply eula.samsungiotcloud.com is 13.249.188.71
Aug 22 20:17:48 dnsmasq[540]: reply eula.samsungiotcloud.com is 13.249.188.118
Aug 22 20:17:48 dnsmasq[540]: reply eula.samsungiotcloud.com is 13.249.188.6
Aug 22 20:17:48 dnsmasq[540]: reply eula.samsungiotcloud.com is 13.249.188.37

I see a plethora of:

Aug 22 20:20:27 dnsmasq[540]: query[A] connectivitycheck.gstatic.com from 192.168.0.171
Aug 22 20:20:27 dnsmasq[540]: /etc/hosts connectivitycheck.gstatic.com is 192.168.0.2

Is this a known issue and something to whitelist?

FTL version: v4.3.1

Blacklists used:

https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts	
https://mirror1.malwaredomains.com/files/justdomains	
http://sysctl.org/cameleon/hosts	
https://zeustracker.abuse.ch/blocklist.php?download=domainblocklist	
https://s3.amazonaws.com/lists.disconnect.me/simple_tracking.txt	
https://s3.amazonaws.com/lists.disconnect.me/simple_ad.txt	
https://hosts-file.net/ad_servers.txt
2

Why is this in your hosts file?

3

See below. I believe I found on this forum on setting that entry for connectivitycheck.gstatic.com

cat /etc/hosts
127.0.0.1	localhost
::1		localhost ip6-localhost ip6-loopback
ff02::1		ip6-allnodes
ff02::2		ip6-allrouters

127.0.1.1	raspberrypi
192.168.0.2	raspberrypi
192.168.0.2	connectivitycheck.gstatic.com
4

Remove the entry from the hosts file and see if the problem resolves.

5

Took it out restarted DNS and problem reoccured.

6

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