1 .\" Copyright (c) 2017 by Michael Kerrisk <mtk.manpages@gmail.com>
3 .\" SPDX-License-Identifier: Linux-man-pages-copyleft
6 .TH NETWORK_NAMESPACES 7 2020-06-09 "Linux man-pages (unreleased)"
8 network_namespaces \- overview of Linux network namespaces
10 Network namespaces provide isolation of the system resources associated
11 with networking: network devices, IPv4 and IPv6 protocol stacks,
12 IP routing tables, firewall rules, the
14 directory (which is a symbolic link to
18 directory, various files under
20 port numbers (sockets), and so on.
22 network namespaces isolate the UNIX domain abstract socket namespace (see
25 A physical network device can live in exactly one
27 When a network namespace is freed
28 (i.e., when the last process in the namespace terminates),
29 its physical network devices are moved back to the
30 initial network namespace (not to the parent of the process).
34 device pair provides a pipe-like abstraction
35 that can be used to create tunnels between network namespaces,
36 and can be used to create a bridge to a physical network device
38 When a namespace is freed, the
40 devices that it contains are destroyed.
42 Use of network namespaces requires a kernel that is configured with the
45 .\" FIXME .SH EXAMPLES
54 .BR user_namespaces (7),