Syntax: -dnscache
This option will create a hosts table that will be used during
subsequent walks to speed up host name lookups. Every host name
encountered will be stored in the table and subsequent lookups for any
host seen before will not require querying your nameserver. This is
helpful when you walk a lot of different sites and have slow name
service. The hosts table will NOT be cleared when the database
is wiped with -wipe
.