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-.\" Copyright (c) 2017 by Michael Kerrisk <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.\"
-.TH network_namespaces 7 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-network_namespaces \- overview of Linux network namespaces
-.SH DESCRIPTION
-Network namespaces provide isolation of the system resources associated
-with networking: network devices, IPv4 and IPv6 protocol stacks,
-IP routing tables, firewall rules, the
-.I /proc/net
-directory (which is a symbolic link to
-.IR /proc/ pid /net ),
-the
-.I /sys/class/net
-directory, various files under
-.IR /proc/sys/net ,
-port numbers (sockets), and so on.
-In addition,
-network namespaces isolate the UNIX domain abstract socket namespace (see
-.BR unix (7)).
-.P
-A physical network device can live in exactly one
-network namespace.
-When a network namespace is freed
-(i.e., when the last process in the namespace terminates),
-its physical network devices are moved back to the
-initial network namespace
-(not to the namespace of the parent of the process).
-.P
-A virtual network
-.RB ( veth (4))
-device pair provides a pipe-like abstraction
-that can be used to create tunnels between network namespaces,
-and can be used to create a bridge to a physical network device
-in another namespace.
-When a namespace is freed, the
-.BR veth (4)
-devices that it contains are destroyed.
-.P
-Use of network namespaces requires a kernel that is configured with the
-.B CONFIG_NET_NS
-option.
-.\" FIXME .SH EXAMPLES
-.SH SEE ALSO
-.BR nsenter (1),
-.BR unshare (1),
-.BR clone (2),
-.BR veth (4),
-.BR proc (5),
-.BR sysfs (5),
-.BR namespaces (7),
-.BR user_namespaces (7),
-.BR brctl (8),
-.BR ip (8),
-.BR ip\-address (8),
-.BR ip\-link (8),
-.BR ip\-netns (8),
-.BR iptables (8),
-.BR ovs\-vsctl (8)