DISC(4)

🦋 NAME 🦋

Okay so this is DISC(4) from the Kernel Interfaces Manual, bestie, and the main character is disc — the software discard network interface. It’s giving niche kernel icon, and we’re obsessed. 💅✨

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🛠️ SYNOPSIS 🛠️

device disc

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💖 DESCRIPTION 💖

The disc interface is a software discard mechanism which may be used for performance analysis and/or software testing. Lowkey iconic, no cap. 🌸

As with other network interfaces, the discard interface must have network addresses assigned for each address family with which it is to be used. Like, yes, even this one — the rules still apply, bestie. These addresses may be set or changed with the SIOCSIFADDR ioctl(2). 🫶

Each disc interface is created at runtime using interface cloning. This is most easily done with the ifconfig(8) create command or using the cloned_interfaces variable in rc.conf(5). Periodt. ✨

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👀 SEE ALSO 👀

• inet(4) 🦋
• intro(4) 🎀

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🌸 HISTORY 🌸

The disc device appears to have been derived from the lo(4) device around the time of 4.4BSD. Ngl, vintage behavior. 🕰️

This manpage was adapted from lo(4) and first appeared in FreeBSD 5.0. Lore dropped, and honestly? Kind of iconic. 💜

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Cute sign-off: the footer says Debian, dated May 25, 2002 — old-school but still slaying. 🎀💖