Despite adding auto wlan0 or auto ppp0 to my /etc/network/interfaces configuration, these interfaces don't seem to want to come online at boot time.
I got this issue initially when I was using WiFi but I thought it was a one-off issue. I fixed it by adding allow-hotplug wlan0 like this:
allow-hotplug wlan0
auto wlan0
iface wlan0 inet dhcp
...
But now I'm trying to add my Adafruit FONA's ppp connection at boot time with the following code that they recommend in the user manual under Automatic PPP Connection On Boot:
auto fona
iface fona inet ppp
provider fona
But I get nothing at boot time. As soon as I type ifup fona, it works and pulls up a connection just fine.
Bonus question:
Is there a nice way to manage such a ppp connection so that it will automatically redial when disconnected and such? I'm using NetworkManager but I can't work out how to make this happen.
