When I upgraded from Ubuntu 8.04 (Hardy) to Ubuntu 8.10 (Intrepid), a dhclient-exit-hook script I wrote no longer functioned. dhclient-script was previously used by dhclient so that whenever the dhcp changed, it would reconfigure the interfaces, generate the /etc/resolv.conf, and run scripts who’s intention is to modify the /etc/resolv.conf file based on the dhcp settings. [...]