if(!get_config_string(lookup_config(config_tree, "Device"), &device))
device = DEFAULT_DEVICE;
if(!get_config_string(lookup_config(config_tree, "Interface"), &interface))
interface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
if(!get_config_string(lookup_config(config_tree, "Device"), &device))
device = DEFAULT_DEVICE;
if(!get_config_string(lookup_config(config_tree, "Interface"), &interface))
interface = rindex(device, '/') ? rindex(device, '/') + 1 : device;