Sorry for the late response, I haven't got a chance back at this until now.
Ok, so I tried un-checking the "Connect Automatically" on the wired connection ( to the WP ), still no go. Your version of kali did not look like mine, yours does say "Configure Automatically" not that the terminology used should matter much.
Eth0 - wired nic is manually set to 172.16.42.42
Eth1 is connected to my home router.
When I unplug the rj45 to the WP though, internet works again.
root@NAHost:~# ./wp4.sh
_ ___ _______ ____ _ __
| | / (_) ____(_) / __ \(_)___ ___ ____ _____ ____ / /__
| | /| / / / /_ / / / /_/ / / __ \/ _ \/ __ '/ __ \/ __ \/ / _ \
| |/ |/ / / __/ / / / ____/ / / / / __/ /_/ / /_/ / /_/ / / __/
|__/|__/_/_/ /_/ /_/ /_/_/ /_/\___/\__,_/ .___/ .___/_/\___/
OWN the Network /_/ /_/ v2.1
Pineapple Netmask [255.255.255.0]:
Pineapple Network [172.16.42.0/24]:
Interface between PC and Pineapple [eth0]:
Interface between PC and Internet [wlan0]: eth1
Internet Gateway [172.16.42.1]:
IP Address of Host PC [172.16.42.42]:
IP Address of Pineapple [172.16.42.1]:
_ . ___ \||/ Internet: 172.16.42.1 - eth1
( _ )_ <--> [___] <--> ,<><>, Computer: 172.16.42.42
(_ _(_ ,) \___\ '<><>' Pineapple: 172.16.42.0/24 - eth0
SIOCADDRT: Network is unreachable
Browse to http://172.16.42.1:1471 -- Happy Hacking!