IFCFG-LO(5)

🦋 NAME 🦋

okay so welcome to the Network configuration manual page for ifcfg-lo(5) — it's the loopback network LAN interface configuration file, and honestly? iconic. 💅

✨ SYNOPSIS ✨

/etc/sysconfig/network/ifcfg-lo*

The local loopback mechanism is used to run a network service on a host without requiring a physical network interface, or making the network service inaccessible from/to the other networks the computer may be connected to. 🫶

The name localhost normally resolves to 127.0.0.1 (IPv4 loopback address) and to ::1 (IPv6 loopback address). ✨

Example: a locally installed website/service may be accessed via a web-browser by the URL http://localhost to display its home/configuration page. 🌸

🎀 EXAMPLES 🎀

Sets up loopback interface lo:

ifcfg-lo
   IPADDR=127.0.0.1/8
   NETMASK=255.0.0.0
   NETWORK=127.0.0.0
   STARTMODE=nfsroot
   BOOTPROTO=static
   USERCONTROL=no
   FIREWALL=no

Note: Loopback is automatically created and set up by the Linux kernel. The ifcfg file marks it STARTMODE=nfsroot to skip a shutdown on network ifdown requests. 🫶

💀 BUGS 💀

Please report bugs as described at https://bugs.opensuse.org — that's the whole bug instruction, bestie. 😭

👑 AUTHOR 👑

• Marius Tomaschewski <mt@suse.de>
• Mikhail Kasimov <mikhail.kasimov@gmail.com>

🌈 SEE ALSO 🌈

routes(5), ifcfg(5), wicked(8).

💖 footer moment: this page is from wicked, dated AUGUST 2018, and it's the IFCFG-LO(5) manual — bye bestie! 🫶