previously only queried names were resolved from cache, this meant that if the target name was present in cache but a server on the search path dropped from it, it would refetch it - this is a problem when a loadbalancer with very short TTL was in search path

if the flag is left on, it prevents further caching

the resolution has to start from the root for zonecut resolution, otherwise it might stall resolution if the only good NS drops out of cache and only the bad remain

this allows list-like declaration of bound interfaces

e.g. net = { ‘127.0.0.1’, net.eth0 }

the cache can be setup declaratively with:

cache.size = 10 * MB

the cache storage backend can be changed with:

cache.storage = ‘lmdb://.'