RADIUS server: Realm discovery for computer authentication

As of LCOS version 9.10, the RADIUS server additionally determines the realm of a RADIUS request from a computer authentication.

The device considers the parts of a user name that follow to be the realm:

user@company.com
company.com is the realm and is separated from the name of the user by an @ character.
company\user
company is the realm and is separated from the name of the user by a backslash ("\"). This form of authentication is used for a Windows login, for example.
host/user.company.com
If the user name starts with the string host/ and the rest of the name contains at least one dot/period, the device considers everything after the first dot to be the realm (in this case company.com).