Active Directory login fail on Mac OS

Not really an issue but a possible solution to one. We've been having this issue where users are having trouble logging to AD on our Macs. We have 3 AD servers on different sites including one Azure AD. Apparently when a user tries to log in, it randomly goes between those 3 servers which usually fails. The solution?

1. In Directory Utility, tick on Prefer this domain and enter the name of the AD server closest to you (on site)

2. Optional: Tick create mobile account at login and untick require confirmation

3. Add the closest AD server IP address in the hosts file (they're in **/private/etc/hosts**)

Steps 1 & 2 can be mass-deployed using a profile created using Profile Creator.