I downloaded the updates tonight, December 6. kernel 5.4.1-136-1-x86_64 was one of the updates. After reboot, Network manager would disconnect at "setting hostname" and go into a loop where it would continually connect, then drop connection at "setting hostname". I rebooted with the previous kernel 5.3.13-135-1-x86_64 and everything worked correctly with no packages rolled back. I then rolled back the packages and everything works correctly. It is something to do with kernel 5.4.1-136-1-x86_64 and my ethernet.
sudo lspci gives me the following information on my ethernet:
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V (rev 31)
and sudo find /sys | grep drivers.*00:1f.6 shows me my ethernet driver is e1000e
Again, without rolling anything back, booting with kernel 5.3.13-135-1-x86_64 works fine, but booting with kernel 5.4.1-136-1-x86_64 causes network manager to drop connection at "setting hostname".