[Unbound-users] named.cache & .conf setup best practices

[shmick at riseup.net]

hello list,

concerning the following entities and the many other entites that
provide dns services:

cesidian;
unifiedroot;
public-root;
opennic;

1.
what is considered better practice for use with unbound:

1.1
merging the above individually provided named.cache entries into one
file with the existing iana root-servers.net named.cache; or

1.2
manually adding forward/stub zone entries into the .conf file instead to
resolve other domains that would normally be un-resolvable?

2.
why ?

thanks