nscd -- cache your dns lookup
sudo aptitude install nscd
clean your dns cache
sudo /etc/init.d/nscd restart
(if you don't have nscd, your system will try to look from dns server everytime when you use a host name)
or you can build your own dns server "bind9"
sudo aptitude install bind9
get your global dns server ip address updated:
wget ftp://ftp.internic.net/domain/named.cache
and save to /etc/bin/db.root
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