#!/bin/sh

# This script can be installed in /etc/dhcp/dhclient.d/ to set the client's
# hostname based either on the hostname that the DHCP server supplied or the
# hostname in whatever ptr record exists for the assigned IP address.

if [ -z "$new_host_name" -a -n "$new_ip_address" ]; then
	new_host_name="$(resolve -s "$new_ip_address" 2>/dev/null)"
fi
if [ -n "$new_host_name" ]; then
	hostname "$new_host_name"
fi