I also did some tests with various builds regarding the networking regression. The test I did was as follows:
1. Open network prefs, add an interface, keep the default PCNet driver, click Use.
2. Run "ifconfig net0" a few times with some seconds waiting in between, and check if a DHCP address has been assigned.
Results:
"alpha-1": bad
"alpha-3": bad
"alpha-4": bad
2023-04-xx-d1: bad
2023-03-19 (32-bit ABIv1): good
2023-04-08 (64-bit ABIv1): bad
2023-04-08 (32-bit ABIv1): does not boot
EDIT: these tests were with VirtualBox.