Net-tools-CVS_20101030

#### Beyond Linux® From Scratch - Version 2019-02-27

### Chapter 15. Networking Programs

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# Net-tools-CVS_20101030

## Introduction to Net-tools

The Net-tools package is a collection of programs for controlling the network subsystem of the Linux kernel.

This package is known to build and work properly using an LFS-8.4 platform.

### Package Information

- Download (HTTP): http://anduin.linuxfromscratch.org/BLFS/net-tools/net-tools-CVS_20101030.tar.gz

- Download (FTP): ftp://anduin.linuxfromscratch.org/BLFS/net-tools/net-tools-CVS_20101030.tar.gz

- Download MD5 sum: 6be14ed473cacdd68edeaa9605adc469

- Download size: 222 KB

- Estimated disk space required: 7.0 MB

- Estimated build time: less than 0.1 SBU

### Additional Downloads

- Required patch: http://www.linuxfromscratch.org/patches/blfs/svn/net-tools-CVS_20101030-remove_dups-1.patch

User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/net-tools

## Installation of Net-tools

The instructions below automate the configuration process by piping yes to the make config command. If you wish to run the interactive configuration process (by changing the instruction to just make config), but you are not sure how to answer all the questions, then just accept the defaults. This will be just fine in the majority of cases. What you're asked here is a bunch of questions about which network protocols you've enabled in your kernel. The default answers will enable the tools from this package to work with the most common protocols: TCP, PPP, and several others. You still need to actually enable these protocols in the kernel—what you do here is merely tell the package to include support for those protocols in its programs, but it's up to the kernel to make the protocols available.

### Note

This package has several unneeded protocols and hardware device specific functions that are obsolete. To only build the minimum needed for your system, skip the yes command and answer each question interactively. The minimum needed options are 'UNIX protocol family' and 'INET (TCP/IP) protocol family'.

The patch below cleans up the installation so that it does not overwrite the ifconfig and hostname programs that were installed in LFS.

Install Net-tools by running the following commands:

    patch -Np1 -i ../net-tools-CVS_20101030-remove_dups-1.patch &&
    sed -i '/#include <netinet\/ip.h>/d'  iptunnel.c &&

    yes "" | make config &&
    make

This package does not come with a test suite.

Now, as the `root` user:

    make update

## Command Explanations

sed -i '/#include <netinet\/ip.h>/d' iptunnel.c: This fixes build breakage with linux-4.8 headers.

yes "" | make config: Piping yes to make config skips the interactive configuration and accepts the defaults.

## Contents

Installed Programs: arp, ipmaddr, iptunnel, mii-tool, nameif, netstat, plipconfig, rarp, route, and slattach
Installed Libraries: None
Installed Directories: None

### Short Descriptions

arp | is used to manipulate the kernel's ARP cache, usually to add or delete an entry, or to dump the entire cache.
ipmaddr | adds, deletes and shows an interface's multicast addresses.
iptunnel | adds, changes, deletes and shows an interface's tunnels.
mii-tool | checks or sets the status of a network interface's Media Independent Interface (MII) unit.
nameif | names network interfaces based on MAC addresses.
netstat | is used to report network connections, routing tables, and interface statistics.
plipconfig | is used to fine tune the PLIP device parameters, to improve its performance.
rarp | is used to manipulate the kernel's RARP table.
route | is used to manipulate the IP routing table.
slattach | attaches a network interface to a serial line. This allows you to use normal terminal lines for point-to-point links to other computers.

Last updated on 2019-02-15 15:58:29 -0600

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