I was getting strange errors saying:

execve (/sbin/dhclient-script, ...): No such file or directory

eventually I tracked the problem down to find that it is cased because the dhclient-script uses bash in ints shebang #!/bin/bash

This is disappointing because I am using dhclient on a minimal system that does not have bash installed, nor need bash for any other purpose.

It would be good if the dhclient-script used shell as a lowest common denominator.

thanks 

Andrew