If you are on a DHCP network, it might be helpful to set localhost to your mac

bobo

这是一个关于/etc/hosts设置的说明：

127.0.0.1      localhost
# the next line contains your IP for your local LAN, and your associated machine name
192.168.1.1    mymachine.mydomain.com        mymachine

Note: If you are on a DHCP network, it might be helpful to set localhost to your machine's actual hostname. This will help GNOME and many other programs in name resolution.

不清楚：
If you are on a DHCP network, it might be helpful to set localhost to your machine's actual hostname
是要我怎么做。