Linux - Loopback IP configuration
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To configure the host to resolve host names to the loopback IP (equivalent of the Windows loopback adapter) on a dhcp environment, the /etc/hosts file must be modified to contain the following entries:
127.0.0.1 hostname.domainname hostname 127.0.0.1 localhost.localdomain localhost
After doing so, you can check that the host name resolves to the loopback IP address by entering the following command:
/bin/ping hostname.domainname
