debian4:/opt/hadoop-0.15.3/logs# cat /etc/hosts
127.0.0.1       localhost
127.0.1.1       debian4.khaz    debian4

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts