I’ve got a BBB running Debian 3.8. My WIFI dongle is a TPLink TL-WN722N (one of the recognized/working dongles).
I’m running into the following issue. When I have eth0 connected, my wlan0 connection works great. When I remove my eth0 connection, my wlan0 connection no longer works. By no longer works I mean I can’t ping/ssh into the device. With eth0 connected, I can do both things using the wifi connection.
I’ve posted my network interface file below. I’ve never run into an issue like this before. Anybody have any ideas?
This file describes the network interfaces available on your system
and how to activate them. For more information, see interfaces(5).
The loopback network interface
auto lo
iface lo inet loopback
The primary network interface
#auto eth0
allow-hotplug eth0
#iface eth0 inet dhcp
iface eth0 inet static
address 192.168.0.19
netmask 255.255.255.0
gateway 192.168.0.1
metric 100
dns-nameservers 8.8.8.8
Example to keep MAC address between reboots
#hwaddress ether DE:AD:BE:EF:CA:FE
The secondary network interface
#auto eth1
#iface eth1 inet dhcp
WiFi Example
auto wlan0
allow-hotplug wlan0
#iface wlan0 inet dhcp
face wlan0 inet static
wpa-ssid SSID NAME
wpa-psk SSID PASSKEY
address 192.168.0.21
netmask 255.255.255.0
gateway 192.168.0.1
dns-nameservers 8.8.8.8
Ethernet/RNDIS gadget (g_ether)
… or on host side, usbnet and random hwaddr
Note on some boards, usb0 is automaticly setup with an init script
iface usb0 inet static
address 192.168.7.2
netmask 255.255.255.0
network 192.168.7.0
gateway 192.168.7.1