On Tue Mar 08 16:26:22 2011, tjcarlin@iol.unh.edu wrote:
> It seems that in my configuration the "dhclient-script" is correctly
> returning the error code of 3 from "exit_with_hooks", indicating
> that it determined the address was duplicated. From there I am not
> sure if dhclient is processing the return code, or if there is
> something else happening.

This is a known issue and there is an existing bug report for it, 23357. I'm merging the tickets.

Thank you for reporting this.