---
name: "dhcpcd3"
section: "8"
platform: "linux"
package: "dhcpcd"
version: "1:3.2.3-11+deb7u1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/dhcpcd3"
---

# dhcpcd3(8)

a wrapper for the DHCP client daemon.

## NAME

dhcpcd - a wrapper for the DHCP client daemon.

## SYNOPSIS

**dhcpcd \<option\> \<interface\>**

## DESCRIPTION

In Debian, the DHCP client daemon binary is called dhcpcd-bin and it is invoked via a wrapper called dhcpcd. Dhcpcd is normally invoked by  [**ifup**(8)](/ifup/8.md) but ifup only allows the setting of a limited number of dhcpcd command line flags. The dhcpcd wrapper reads extra flags from /etc/default/dhcpcd and then invokes  [**dhcpcd-bin**(8)](/dhcpcd-bin/8.md) It also adds the hostname as an argument to the command line, unless it is already set by ifup or /etc/default/dhcpcd or SET\_HOSTNAME is configured. In that case there is no point in sending the old hostname with the DHCP request when it will be overridden by a new name supplied by the DHCP server.

Note that the interface argument must be supplied, there is no default to eth0 like the unadorned dhcpcd binary.

## SEE ALSO

[**ifup**(8)](/ifup/8.md) [**dhcpcd-bin**(8)](/dhcpcd-bin/8.md)

## AUTHORS

Simon Kelley \<srk@thekelleys.org.uk\>