How to send a client’s hostname to the DHCP server
January 5th, 2013
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In contrast to Ubuntu (or even Microsoft Windows) default installations of Fedora do not send the client’s hostname to the DHCP server.
To change this behaviour, add a DHCP_HOSTNAME variable to your /etc/sysconfig/network-scripts/ifcfg-eth0 file (eth0 being your NIC’s interface name):
UUID="616426f3-ac0b-4a4a-9221-62a0055bfb07" NM_CONTROLLED="yes" NETBOOT="yes" BOOTPROTO="dhcp" DHCP_HOSTNAME="MyFedoraBox" DEVICE="eth0" TYPE="Ethernet" ONBOOT=yes NAME="DHCP" HWADDR=00:25:22:4A:3F:F2 DEFROUTE=yes PEERDNS=yes PEERROUTES=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no USERS=user
Of course, this only works if you actually get your IP address via DHCP (since the DHCP server hands off the hostname to the DNS server). If you use a static IP configuration, nsupdate can be used to dynamically update the DNS server records. Examples and instructions on how to use nsupdate can be found at http://linux.yyz.us/nsupdate/ or http://dijks.wordpress.com/2012/07/17/register-a-hostnames-static-ip-with-your-corporate-dns-server/.