#### Linux From Scratch - Version 11.1

### Chapter 8. Installing Basic System Software

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# 8.61. IPRoute2-5.16.0

The IPRoute2 package contains programs for basic and advanced IPV4-based networking.

Approximate build time: 0.2 SBU
Required disk space: 15 MB

## 8.61.1. Installation of IPRoute2

The arpd program included in this package will not be built since it is dependent on Berkeley DB, which is not installed in LFS. However, a directory for arpd and a man page will still be installed. Prevent this by running the commands below. If the arpd binary is needed, instructions for compiling Berkeley DB can be found in the BLFS Book at https://www.linuxfromscratch.org/blfs/view/11.1/server/db.html.

    sed -i /ARPD/d Makefile
    rm -fv man/man8/arpd.8

Compile the package:

    make

This package does not have a working test suite.

Install the package:

    make SBINDIR=/usr/sbin install

If desired, install the documentation:

    mkdir -pv             /usr/share/doc/iproute2-5.16.0
    cp -v COPYING README* /usr/share/doc/iproute2-5.16.0

## 8.61.2. Contents of IPRoute2

Installed programs: bridge, ctstat (link to lnstat), genl, ifcfg, ifstat, ip, lnstat, nstat, routef, routel, rtacct, rtmon, rtpr, rtstat (link to lnstat), ss, and tc
Installed directories: /etc/iproute2, /usr/lib/tc, and /usr/share/doc/iproute2-5.16.0

### Short Descriptions

bridge | Configures network bridges
ctstat | Connection status utility
genl | Generic netlink utility frontend
ifcfg | A shell script wrapper for the ip command [Note that it requires the arping and rdisk programs from the iputils package found at http://www.skbuff.net/iputils/.]
ifstat | Shows the interface statistics, including the amount of transmitted and received packets by interface
ip | The main executable. It has several different functions: ip link `<device>` allows users to look at the state of devices and to make changes ip addr allows users to look at addresses and their properties, add new addresses, and delete old ones ip neighbor allows users to look at neighbor bindings and their properties, add new neighbor entries, and delete old ones ip rule allows users to look at the routing policies and change them ip route allows users to look at the routing table and change routing table rules ip tunnel allows users to look at the IP tunnels and their properties, and change them ip maddr allows users to look at the multicast addresses and their properties, and change them ip mroute allows users to set, change, or delete the multicast routing ip monitor allows users to continuously monitor the state of devices, addresses and routes
lnstat | Provides Linux network statistics; it is a generalized and more feature-complete replacement for the old rtstat program
nstat | Shows network statistics
routef | A component of ip route. This is for flushing the routing tables
routel | A component of ip route. This is for listing the routing tables
rtacct | Displays the contents of `/proc/net/rt_acct`
rtmon | Route monitoring utility
rtpr | Converts the output of ip -o back into a readable form
rtstat | Route status utility
ss | Similar to the netstat command; shows active connections
tc | Traffic Controlling Executable; this is for Quality Of Service (QOS) and Class Of Service (COS) implementations tc qdisc allows users to setup the queueing discipline tc class allows users to setup classes based on the queuing discipline scheduling tc estimator allows users to estimate the network flow into a network tc filter allows users to setup the QOS/COS packet filtering tc policy allows users to setup the QOS/COS policies

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