When fixing the TK clearing on Authentication frame RX, an issue in
getting unicast frames through after re-joining the IBSS was hit. It is
not exactly clear why this happens, but the unicast frame from the STA
that re-joined the network gets lost in the frame reorder buffer of the
STA that remains in the network.
For now, this disables HT to avoid a strange issue with mac80211
frame reordering during the final test_connectivity() call. Once that is
figured out, these disable_ht=1 calls should be removed from the test
case.
Signed-off-by: Jouni Malinen <j@w1.fi>