UNSET and UNSET_ALL directives
UNSET, UNSET_ALL The UNSET and UNSET_ALL directives interrupt the streaming of policy-specific directives.
All policy-specific directives that are passed to a client in a stream are passed in all subsequent streams. The UNSET and UNSET_ALL directives change this behavior. These directives are recognized only if the option is set for the policy.
See Directives for specific policy types.
See Allow multiple data streams (policy attribute).