Hosts

A description of the hosts file (/etc/hosts). For more details, see hosts(5).

Example

A template hosts file, with interleaved explanations:

# IPv4 loopback address
127.0.0.1 localhost.localdomain localhost
# Local hostname resolution. Can otherwise be provided by `myhostname` plugin (see above).
127.0.1.1 <MYHOSTNAME>

# IPv6 loopback address.
::1 ip6-localhost ip6-loopback
# Reserved, as with IPv4 Class E address space (see `https://en.wikipedia.org/wiki/Classful_network#Classful_addressing_definition`).
fe00::0 ip6-localnet
# The Link-local scope, as with `224.0.0.1` in IPv4.
ff02::1 ip6-allnodes
# All routers in the Link-local scope, as with `224.0.0.2` in IPv4.
ff02::2 ip5-allrouters
# Historically all hosts in the Link-local scope, now unassigned.
ff02::3 ip6-allhosts

Syntax

The hosts file is structured as:

# comment
address name alias[es]

Each address should be listed once. Duplicated lines will be disregarded at best. Aliases should be used sparingly, as to make a local host available with and without specifying the domain.

CategoryRicottone