I wanted to put this in the dhclient.conf file:
supersede domain-name "foo.org foo2.org";
but there is no dhclient.conf file...where is it? (Fedora14/GNOME)
I believe that you would use
/etc/dhclient.conf which isn't created by default, so you would create it yourself of course.
From reading the
dhclient man page, you could also run
dhclient with the
-cf flag to specify a config file.
dhclient -cf ~/dhclient.conf
For NetworkManager managed ehternet ports, you might look for the file