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| author | Yuriy Andamasov <yuriy@vyos.io> | 2026-05-06 23:24:45 +0300 |
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| committer | Yuriy Andamasov <yuriy@vyos.io> | 2026-05-06 23:24:45 +0300 |
| commit | 89f86b481456437f3e9f16895e7408fe460de3f3 (patch) | |
| tree | f1bb09b203d56234c4518e6ab2d7fa5ca8610dec /docs/configuration/interfaces/rst-loopback.rst | |
| parent | 6ce9145fa101e623c61f009c9cf5bb75a8a4a108 (diff) | |
| parent | 7cf51e1c2901f6d1b01e9bff194f7188bc29e417 (diff) | |
| download | vyos-documentation-89f86b481456437f3e9f16895e7408fe460de3f3.tar.gz vyos-documentation-89f86b481456437f3e9f16895e7408fe460de3f3.zip | |
Merge remote-tracking branch 'origin/current' into feat/docs-llms-txt-current
# Conflicts:
# docs/conf.py
Diffstat (limited to 'docs/configuration/interfaces/rst-loopback.rst')
| -rw-r--r-- | docs/configuration/interfaces/rst-loopback.rst | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/docs/configuration/interfaces/rst-loopback.rst b/docs/configuration/interfaces/rst-loopback.rst new file mode 100644 index 00000000..68158111 --- /dev/null +++ b/docs/configuration/interfaces/rst-loopback.rst @@ -0,0 +1,65 @@ +:lastproofread: 2026-01-23 + +.. _loopback-interface: + +######## +Loopback +######## + +The loopback interface is a virtual, software-based network interface. All +traffic sent to it loops back and only targets services on the local host. + +.. note:: Only one loopback ``lo`` interface is allowed per operating system. + If you require multiple virtual interfaces, use the :ref:`dummy-interface` + interface type. + +************* +Configuration +************* + +Common interface configuration +============================== + +.. cmdinclude:: /_include/interface-address.txt + :var0: loopback + :var1: lo + +.. cmdinclude:: /_include/interface-description.txt + :var0: loopback + :var1: lo + +********* +Operation +********* + +.. opcmd:: show interfaces loopback + + Show brief interface information. + + .. code-block:: none + + vyos@vyos:~$ show interfaces loopback + Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down + Interface IP Address S/L Description + --------- ---------- --- ----------- + lo 127.0.0.1/8 u/u + ::1/128 + +.. opcmd:: show interfaces loopback lo + + Show detailed interface information. + + .. code-block:: none + + vyos@vyos:~$ show interfaces loopback lo + lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 + link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 + inet 127.0.0.1/8 scope host lo + valid_lft forever preferred_lft forever + inet6 ::1/128 scope host + valid_lft forever preferred_lft forever + + RX: bytes packets errors dropped overrun mcast + 300 6 0 0 0 0 + TX: bytes packets errors dropped carrier collisions + 300 6 0 0 0 0 |