I installed the latest OpenIndiana 24.04 and followed Till Wegmüller's instruction to update to the latest packages:

https://openindiana.org/pipermail/openindiana-discuss/2024-June/026890.html

Everything went smoothly until I rebooted the system to boot into the new BE. I quickly realized that the network applet was lost and I have no network connection. If I boot into the previous BE then I have network connection as usual.