December 2012
Intermediate to advanced
888 pages
48h 24m
English
Content preview from Ubuntu Unleashed 2013 Edition: Covering 12.10 and 13.04, Eighth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Configuring the Loopback Interface Manually
The localhost interface’s IP address is specified in a text configuration file that is used by Ubuntu to keep record of various network-wide IP addresses. The file is called /etc/hosts and usually exists on a system, even if it is empty. The file is used by the Linux kernel and other networking tools to enable them to access local IP addresses and hostnames. If you have not configured any other networking interfaces, you might find that the file looks something like this:
127.0.0.1 localhost127.0.1.1 seymour# The following lines are desirable for IPv6 capable hosts::1 localhost ip6-localhost ip6-loopbackfe00::0 ip6-localnetff00::0 ip6-mcastprefixff02::1 ip6-allnodesff02::2 ip6-allrouters
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