Failed to start Raise network interfaces

[Bluuuux]

Hi guys,
I installed Kali Linux 3 days ago in dual-boot with OSX. I've been havin problem with internet connection.
I just wanna say that im kind of a noob with linux.
So basically at first I coudn't even see the network settings because of a problem with NetworkManager, but I resolved it somehow.
Now if I connect to my router with WiFi or ethernet internet just doesn't work.
I'll post what I managed to find untill now.
Sorry if I write this uncorrectly it is the first time I use a forum to post code.

root@ETCH:~# systemctl status networking.service
● networking.service - Raise network interfaces
   Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor prese
   Active: inactive (dead) since Sat 2016-12-17 03:10:24 CET; 32min ago
     Docs: man:interfaces(5)
 Main PID: 425 (code=exited, status=1/FAILURE)

dic 17 03:10:22 ETCH systemd[1]: Starting Raise network interfaces...
dic 17 03:10:22 ETCH sh[418]: Unknown interface eth0
dic 17 03:10:22 ETCH ifup[425]: mkdir: cannot create directory '/etc/resolvconf/
dic 17 03:10:23 ETCH ifup[425]: Unknown interface eth0
dic 17 03:10:24 ETCH systemd[1]: networking.service: Main process exited, code=e
dic 17 03:10:24 ETCH systemd[1]: Failed to start Raise network interfaces.
dic 17 03:10:24 ETCH systemd[1]: networking.service: Unit entered failed state.
dic 17 03:10:24 ETCH systemd[1]: networking.service: Failed with result 'exit-co

root@ETCH:~# systemctl status NetworkManager
● NetworkManager.service - Network Manager
   Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; vendor p
   Active: active (running)
     Docs: man:NetworkManager(8)
 Main PID: 510 (NetworkManager)
   CGroup: /system.slice/NetworkManager.service
           ├─ 510 /usr/sbin/NetworkManager --no-daemon
           └─1053 /sbin/dhclient -d -q -sf /usr/lib/NetworkManager/nm-dhcp-helpe

dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0364] device (wlan
dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0372] manager: Net
dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0480] manager: Net
dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0494] policy: set 
dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0497] dns-mgr: Wri
dic 17 03:10:28 ETCH NetworkManager[510]: mkdir: impossibile creare la directory
dic 17 03:10:28 ETCH NetworkManager[510]: <warn>  [1481940628.0644] dns-mgr: res
dic 17 03:10:28 ETCH NetworkManager[510]: <warn>  [1481940628.0646] dns-mgr: cou
dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0647] device (wlan
dic 17 03:10:30 ETCH NetworkManager[510]: <info>  [1481940630.4043] manager: sta
lines 1-19/19 (END)...skipping...
● NetworkManager.service - Network Manager
   Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)
   Active: active (running)
     Docs: man:NetworkManager(8)
 Main PID: 510 (NetworkManager)
   CGroup: /system.slice/NetworkManager.service
           ├─ 510 /usr/sbin/NetworkManager --no-daemon
           └─1053 /sbin/dhclient -d -q -sf /usr/lib/NetworkManager/nm-dhcp-helper -pf /var/run/dhclient-wlan0.pid -lf /var/lib/NetworkManage

dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0364] device (wlan0): state change: secondaries -> activated (reason 'none') [
dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0372] manager: NetworkManager state is now CONNECTED_LOCAL
dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0480] manager: NetworkManager state is now CONNECTED_GLOBAL
dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0494] policy: set 'NETGEAR59' (wlan0) as default for IPv4 routing and DNS
dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0497] dns-mgr: Writing DNS information to /sbin/resolvconf
dic 17 03:10:28 ETCH NetworkManager[510]: mkdir: impossibile creare la directory "/etc/resolvconf/run": File giÃ* esistente
dic 17 03:10:28 ETCH NetworkManager[510]: <warn>  [1481940628.0644] dns-mgr: resolvconf failed with status 256
dic 17 03:10:28 ETCH NetworkManager[510]: <warn>  [1481940628.0646] dns-mgr: could not commit DNS changes: resolvconf failed with status 256
dic 17 03:10:28 ETCH NetworkManager[510]: <info>  [1481940628.0647] device (wlan0): Activation: successful, device activated.
dic 17 03:10:30 ETCH NetworkManager[510]: <info>  [1481940630.4043] manager: startup complete
lines 1-19/19 (END)

Can someone help me? thank you
Sorry for my english

[Lister]

I had that issue too when I was messing with NetworkManager. I was trying to replace it with Wicd so I can better use the Mana-Wireless-Toolkit.

For me, I don't see any issues aside from the funny looking startup screen and the all caps red letters, "Raising Network Interfaces: FAILED".

I don't have any real problems though.