Emulator -dns-server option does not work after API 31 [249366543]

Fixed

Bug

Status Update

No update yet.

Description

ws...@gmail.com

created issue #1

Sep 28, 2022 12:57AM

DESCRIBE THE ISSUE IN DETAIL: The emulator CLI's -dns-server option does not seem to work on API 31 or newer.

STEPS TO REPRODUCE:

Run a local dns server and log queries: dnsmasq -dq
Start an API 31 emulator: emulator -avd emulator31 -dns-server 127.0.0.1
Resolve a domain: adb shell ping www.reddit.com
dnsmasq does not show that domain in the log.

However, on API 30, these same steps will result in the dnsmasq showing the queries to reddit.com:

dnsmasq: query[A] www.reddit.com from 127.0.0.1
dnsmasq: forwarded www.reddit.com to <ip>
dnsmasq: reply www.reddit.com is <CNAME>
dnsmasq: reply reddit.map.fastly.net is <ip>

We need to override some DNS entries in order to test our app in environments that do not have external internet access, but it stopped working in API 31 or newer.

Comments

ws...@gmail.com <ws...@gmail.com> #2Sep 28, 2022 04:44PM

pa...@google.com <pa...@google.com> Sep 29, 2022 12:52AM

Assigned to an...@google.com.

ws...@gmail.com <ws...@gmail.com> #3Sep 29, 2022 01:03AM

lblb636@ Thanks for reporting this bug. I just want to confirm that the issue is the call device button being not responsive according to the uploaded video. It seems like this issue only happened on Windows.

bo...@google.com <bo...@google.com> Oct 5, 2022 06:53PM

Reassigned to wd...@google.com.

wd...@google.com <wd...@google.com> #4Oct 14, 2022 03:03PM

Accepted by wd...@google.com.

@3 Why does it occur?
And why only from specific API of Android?
On API 28 for example, it doesn't occur...

Please fix this issue for all API versions of the emulator.

wd...@google.com <wd...@google.com> #5Oct 17, 2022 07:45PM

Marked as fixed.

Another similar issue that's related https://b.corp.google.com/issues/226426377

jo...@inspiretek.io <jo...@inspiretek.io> #6Oct 18, 2022 02:44AM

RE#4 I need to try this on Windows laptop first and I couldn't repro on MacOS or Linux. But I think this is most likely related to the modem simulator we introduced for API 31. Will need to further investigate.

wd...@google.com <wd...@google.com> #7Oct 18, 2022 02:27PM

@6 There are plenty of issues on emulator API 31 (and on Android 13 emulator). Many glitches. Spend 5 minutes on it and you will notice.
Why isn't the emulator tested more on Windows OS?
Windows OS is more popular than Linux and MacOS combined (on desktop) ...

wd...@google.com <wd...@google.com> #8Oct 27, 2022 05:59PM

@6 Also please check on all versions of the emulator, to see when this issue started, and fix from there.