DNS responses from simulated zones  (3)


small number (254) of TLD and SLD name server IP addresses occurs because BIND binds to each IP address twice (TCP and UDP) and is limited to 1024 file descriptors
zone files are perfectly consistent
no lame delegations, non-answering name servers, or other errors.
each hostname has only one A record
no CNAME records
each SLD has only two NS records
TTLs are larger than the time to run an experiment

once a record is cached, it stays cached