I can confirm this bug in intrepid.
I'm using a similar script in /etc/dhcp3/dhclient-exit-hooks.d to make a ddnsupdate in my network and it is no more executed in intrepid. It was in gutsy and hardy.
Removing network-manager or managing the relative interface in /etc/network/interfaces solves the problem.
To reproduce the bug it is sufficient to activate the debug script in either /etc/dhcp3/dhclient-enter-hooks.d or /etc/dhcp3/dhclient-exit-hooks.d. The /tmp/dhclient-script.debug file is not created.
I can confirm this bug in intrepid. dhclient- exit-hooks. d to make a ddnsupdate in my network and it is no more executed in intrepid. It was in gutsy and hardy. interfaces solves the problem. dhclient- enter-hooks. d or /etc/dhcp3/ dhclient- exit-hooks. d. The /tmp/dhclient- script. debug file is not created.
I'm using a similar script in /etc/dhcp3/
Removing network-manager or managing the relative interface in /etc/network/
To reproduce the bug it is sufficient to activate the debug script in either /etc/dhcp3/