Oh...

SRX deny logs show that Android device is doing abusive shit with DNS, like I expected. Loads of deny logs showing the device banging out to Google DNS instead of using the DNS DHCP gave it.

I should have put these rules in place a very long time ago.

(protip: if you also have pi-hole, make sure that's allowed to use external DNS, or "pihole -up" might fail)

@yakkoj I found that my android device was ignoring the DHCP DNS. I had to set it statically in my phone.

@AndreC in my case, the system recognizes the DNS setting it received from DHCP, but some software seems to be hard-coded for 8.8.8.8

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@yakkoj I guess whoever programed it thought it was easier to just set the google dns.

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