Kali 2.0 easy-creds tunnel interface and dhcp error.

hi, i am having issues on easy-creds on kali 2.0. i did not seem to have this issue with the older version of kali linux. I am trying to do a fake AP attacks - Fake AP attacks static.
I have already added the interface=at0 in the /etc/default/isc-dhcp-server

as you can see on the attached image on these 2 errors:

at0: ERROR while getting interface flags: No such device

DHCP server starting on tunneled interface.
Job for isc-dhcp-server.service failed. See 'systemctl status isc-dhcp-server.service' and 'journalctl -xn' for details.

here are some info on my kali linux 2:

#1 SMP Debian 4.0.4-1+kali2 (2015-06-03)
4.0.0-kali1-amd64

like to get some on solving this issue. thanks.