1networks(5) File Formats Manual networks(5)
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6 networks - network name information
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9 The file /etc/networks is a plain ASCII file that describes known DARPA
10 networks and symbolic names for these networks. Each line represents a
11 network and has the following structure:
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13 name number aliases ...
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15 where the fields are delimited by spaces or tabs. Empty lines are ig‐
16 nored. The hash character (#) indicates the start of a comment: this
17 character, and the remaining characters up to the end of the current
18 line, are ignored by library functions that process the file.
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20 The field descriptions are:
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22 name The symbolic name for the network. Network names can contain
23 any printable characters except white-space characters or the
24 comment character.
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26 number The official number for this network in numbers-and-dots nota‐
27 tion (see inet(3)). The trailing ".0" (for the host component
28 of the network address) may be omitted.
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30 aliases
31 Optional aliases for the network.
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33 This file is read by the route(8) and netstat(8) utilities. Only Class
34 A, B, or C networks are supported, partitioned networks (i.e., net‐
35 work/26 or network/28) are not supported by this file.
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38 /etc/networks
39 The networks definition file.
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42 getnetbyaddr(3), getnetbyname(3), getnetent(3), netstat(8), route(8)
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46Linux man-pages 6.04 2022-10-30 networks(5)