I had a very similar issue as above; I had to reboot after. And my domain name changed due to the change in mac-address of the bridge.
This is an example of a DHCP setup; since I wasted alot of time trying to debug this I might as well help the next person who gets stuck here.
Longer instruction link
Select (1) Network Interfaces
Move the Settings (DHCP / Reserved IPs to the New Bridge)
Since my network uses DHCP I turned
ipv4_dhcp to ON on the old interface and made sure the IP Aliases were empty.