This patch was suggested to fix an issue we observe, in which the TX and
RX queues of respondd fill up until it does not respond anymore.
We have observed that setting the device down and up using ubus:

> ubus call network.interface.mesh_radio1 down
> ubus call network.interface.mesh_radio1 up

fixes the issue for us.

Using `iw scan` as suggested in the patch, however, does not help.
We are now adding this patch to observe if it changes the behaviour
of the nodes in our net.