dhclient hostname setting

/etc/dhcp/dhclient-exit-hooks.d/hostname

<FILE>
#!/bin/bash
# Mava was hier

if [ "$interface" != "eth0" ]
then
    return
fi


if [ "$reason" != BOUND ] && [ "$reason" != RENEW ] \
   && [ "$reason" != REBIND ] && [ "$reason" != REBOOT ]
then
        return
fi

#echo dhclient-exit-hooks.d/hostname: Dynamic IP address = $new_ip_address
hostname=$(host $new_ip_address | cut -d ' ' -f 5)
pure_host=$(host $hostname | cut -d '.' -f 1)
echo $pure_host > /etc/hostname
hostname $pure_host
#hostname=$pure_host
#echo $new_ip_address $hostname $pure_host >> /etc/hosts


<EOF>