Distinguish blocklist/whitelist

Signed-off-by: Daniele Ricci <daniele.athome@gmail.com>
Resolver: correctly handle stanzas for the network

Signed-off-by: Daniele Ricci <daniele.athome@gmail.com>
Fix wrong reference to parent instance

Signed-off-by: Daniele Ricci <daniele.athome@gmail.com>
Net: safer way to check host name destination

Signed-off-by: Daniele Ricci <daniele.athome@gmail.com>