- local handle = get_filter_handle('ffff:', 'src', device, mac)
- exec('tc filter del dev "%s" parent ffff: protocol ip prio 1 handle %s u32' % { device, handle })
- local handle = get_filter_handle('1:', 'dest', device, mac)
- exec('tc filter del dev "%s" parent 1:0 protocol ip prio 1 handle %s u32' % { device, handle })
+ if device and device ~= "" then
+ local handle = get_filter_handle('ffff:', 'src', device, mac)
+ exec('tc filter del dev "%s" parent ffff: protocol ip prio 1 handle %s u32' % { device, handle })
+ local handle = get_filter_handle('1:', 'dest', device, mac)
+ exec('tc filter del dev "%s" parent 1:0 protocol ip prio 1 handle %s u32' % { device, handle })
+ end