frontend:~# cat /etc/hosts
127.0.0.1 localhost
xxx.zzz.www.aaa example.com frontend
xxx.zzz.www.aaa frontend.example.com
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts