dhcpcd is an implementation of the DHCP client specified in RFC2131. A DHCP client is useful for connecting your computer to a network which uses DHCP to assign network addresses. dhcpcd strives to be a fully featured, yet very lightweight DHCP client.
This package is known to build and work properly using an LFS-11.0 platform.
Download (HTTP): https://roy.marples.name/downloads/dhcpcd/dhcpcd-9.4.0.tar.xz
Download (FTP): ftp://roy.marples.name/pub/dhcpcd/dhcpcd-9.4.0.tar.xz
Download MD5 sum: c36715fc629bc40aa94aae06fa1724c2
Download size: 252 KB
Estimated disk space required: 3.6 MB (with tests)
Estimated build time: less than 0.1 SBU (with tests)
LLVM-12.0.1 (with Clang), ntp-4.2.8p15, chronyd, and ypbind
User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/dhcpcd
Recent releases of dhcpcd
implement privilege separation. Additional installation steps are
necessary to set up the proper environment, which are performed by
issuing the following commands as the root user:
install -v -m700 -d /var/lib/dhcpcd &&
groupadd -g 52 dhcpcd &&
useradd -c 'dhcpcd PrivSep' \
-d /var/lib/dhcpcd \
-g dhcpcd \
-s /bin/false \
-u 52 dhcpcd &&
chown -v dhcpcd:dhcpcd /var/lib/dhcpcd
Install dhcpcd by running the following commands:
./configure --prefix=/usr \
--sysconfdir=/etc \
--libexecdir=/usr/lib/dhcpcd \
--dbdir=/var/lib/dhcpcd \
--privsepuser=dhcpcd &&
make
To test the results, issue: make test.
Now, as the root user:
make install
--libexecdir=/usr/lib/dhcpcd: Set a
more proper location for dhcpcd internal libraries.
--dbdir=/var/lib/dhcpcd:
The default /var/db is not
FHS-compliant
--with-hook=...: You can optionally
install more hooks, for example to install some configuration files
such as ntp.conf. The set of hooks is
in the dhcpcd-hooks directory in the
build tree.
If you want to configure network interfaces at boot using
dhcpcd, you need to
install the systemd unit included in blfs-systemd-units-20210819 package by
running the following command as the root user:
make install-dhcpcd
![[Note]](../images/note.png)
The default
behavior of dhcpcd is to set the hostname
and the mtu. It also overwrites /etc/resolv.conf and /etc/ntp.conf. These modifications to system
configuration files are done by hooks which are stored in
/lib/dhcpcd/dhcpcd-hooks. Setup
dhcpcd by
removing or adding hooks from/to that directory. The execution
of hooks can be disabled by using the --nohook (-C)
command line option or by the nohook option in the /etc/dhcpcd.conf file.
Make sure that you disable the systemd-networkd service or configure it not to manage the interfaces you want to manage with dhcpcd.
At this point you can test if dhcpcd is behaving as expected
by running the following command as the root user:
systemctl start dhcpcd@eth0
To start dhcpcd on
a specific interface at boot, enable the previously installed
systemd unit by running the following command as the root user:
systemctl enable dhcpcd@eth0
Replace eth0 with the
actual interface name.
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