---
name: "if_mn"
section: "4freebsd"
platform: "linux"
package: "freebsd-manpages"
version: "12.2-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/if_mn/4freebsd"
---

# if\_mn(4freebsd)

Siemens Easy321-R1 E1/T1 device driver

## NAME

**mn** – Siemens Easy321-R1 E1/T1 device driver

## SYNOPSIS

**device mn** **options NETGRAPH**

## HARDWARE

The **mn** driver provides support for the Siemens Easy321-R1 E1/T1 reference design card.

## SEE ALSO

[netgraph(4)](/netgraph/4.md), [netintro(4)](/netintro/4.md), [pci(4)](/pci/4.md), [ifconfig(8)](/ifconfig/8.md)

## HISTORY

The **mn** driver first appeared in FreeBSD 4.0.

## AUTHORS

The **mn** driver was written by Poul-Henning Kamp ⟨*phk@FreeBSD.org*⟩.