[WPS] a start job is running for lsb raise network interfaces

[Niccolò Belli]

Hi,
I want to configure my system to use WPS, so I put this into 
/etc/network/interfaces.d/wlan0:

auto wlan0                                                                  
                                                                           
                                                                           
                                                                           
                                                         
iface wlan0 inet dhcp                                                       
                                                                           
                                                                           
                                                                           
                                                         
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf


And this into /etc/wpa_supplicant/wpa_supplicant.conf:

ctrl_interface=/var/run/wpa_supplicant                                      
                                                                           
                                                                           
                                                                           
                                                         
ctrl_interface_group=0                                                      
                                                                           
                                                                           
                                                                           
                                                         
update_config=1


If I run "wpa_cli wps_pbc" everything works flawlessly, and it updates my 
wpa_supplicant.conf with the wifi association details. Unfortunately, when 
I reboot my system without any association in wpa_supplicant.conf (or when 
the access point is out of range) it gets stuck at "a start job is running 
for lsb raise network interfaces".

Any idea?

Thanks,
Niccolò Belli