I have major problem with RB411UAHL related or same issue with this http://forum.mikrotik.com/t/big-bug-unicast-key-exchange-timeout/22912/1
Even already upgraded become v5.19, this issue still occur.
When we downgrade this mikrotik become v4.17, the device become cannot be access.
Trying netinstall, but no luck. Trying to reset, still cannot be access. The only thing that I can found after downgrade become 4.17 is only one beeping sound and then there’s no second beep sound heard any more after that.
Any advice for this?
Thanks for any suggestion,