However , in IPv6 it is usually derived automatically from the interface media access control ( MAC ) address in a rule - based method .
Automatic address configuration of link - local addresses is often non-deterministic as the resulting address can not be predicted .
In IPv6 it is usually derived automatically from the interface media access control ( MAC ) address in a rule - based method .
Automatic address configuration of link - local addresses is often non-deterministic as the resulting address can not be predicted .