Intermittend mDNS detection on IDE 2.*.*, instant on 1.8.*

[bartgrefte]

Describe the problem

Ever since Arduino IDE v2.0.0, mDNS detecton only works intermittently (I'm currently at 2.3.2) and I've seen it reported various times, like on https://forum.arduino.cc/t/ide-2-0-ota-mdns-discovery-only-intermittently-finds-nodes/1036850

Switching back to v1.8.* and the problem is gone, mDNS detection works immediately.

To reproduce

Flash BasicOTA sketch with the appropriate wifi credentials, to an ESP-module, Pico W or similar device.

Start both Arduino IDE v2.. and v1.8.* and see the immediate detection in v1.8.* and spotty (at best) detection in v.2..

Expected behavior

Both v1..8.* as well as v2.. IDE's picking up OTA'ble devices through mDNS.

mdns-discovery version

v1.0.9 (build timestamp: 2023-03-22T15:14:23Z)

Operating system

Windows

Operating system version

10 LTSB 2016

Additional context

Not sure if mDNS related, but besides the mDNS detection issue, I'm also running into another OTA-related something arduino/arduino-ide#740 and the more current earlephilhower/arduino-pico#1728 (comment)

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest version
• My report contains all necessary details