Hi Jochen,the correct answer is: 'it depends'. Macros of which the value requires network access (such as @FULLNAME) are populated only if and when they are used. Other macros, such as @LDOMAIN do not require network access, and are populated when KiXtart starts.
Note that most values are cached, and do not change during a single KiXtart 'run'.
Kind regards,
Ruud