Configuring Linux Static DHCP Clients by Sending Host Name
Q. My DHCP server configured to assign static IPs to few Debian / Ubuntu Linux boxes using hostnames. My Windows 2000 and XP client computer sends hostname automatically. How do I send my hostname under Linux using dhcp client?
A. By default, the DHCP server requests the subnet-mask, broadcast-address, time-offset, routers, domain-name, domain-name-servers and host-name options. DHCP client configuration allows you to set a hostname using send host-name "hostname" parameter.
Linux dhcpclient configuration - dhclient.conf
dhclient.conf is a configuration file for DHCP client under Linux:
- Debian / Ubuntu Linux - /etc/dhcp3/dhclient.conf
- RHEL / Fedora / CentOS Linux - /etc/sysconfig/network-scripts/ifcfg-eth0 (for 1st DHCP network interface)
WARNING! These examples requires correct hostname.Debian / Ubuntu Linux DHCP Client Configuration
Open configuration file, enter:
$ sudo vi /etc/dhcp3/dhclient.conf
Set hostname as follows:
send host-name "vivek-laptop";
Save and close the file. Test new settings, enter:
$ sudo dhclient eth0
$ sudo dhclient interface-name
RHEL / CentOS / Fedora Linux DHCP Client Configuration
Open configuration file, enter:
# vi /etc/sysconfig/network-scripts/ifcfg-eth0
Append hostname, enter:
DHCP_HOSTNAME=vivek-laptop
Save and close the file. Restart network service:
# service network restart
Please refer to dhclient.conf man page for more information, enter:
$ man dhclient.conf
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Related Other Helpful FAQs:
- Setting Up a CentOS / Red Hat Linux DHCP Client
- How do I find out my DHCP server address?
- /etc/network/interfaces Ubuntu Linux networking example
- Linux Force DHCP client (dhclient) to renew ip address
- Linux change ip address
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