Investigate network discovery

> Ping viewer next is not able to automatically find ping devices connected to the Ethernet network. Even though it shows up in the Ping Sonar Devices, you need to manually type in the IP address.

ref: https://discuss.bluerobotics.com/t/pingviewernext-missing-features/22758/3

Start by reproducing the issue with a Ping device connected over Ethernet, then compare the Ping Sonar Devices listing with the devices available for selection. Done means Ping Viewer Next automatically discovers and makes the device available without requiring its IP address to be entered manually.

Written by the indexing model from the issue text.