Comment 4 for bug 293139

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.