Good afternoon!
mikrotik disappeared interface LTE1, reboot and power off mikrotik (~ 24 hours without power) did not yield results
sometimes after the next turn-on LTE1 appears in the list of interfaces and everything works fine, but after reboot mikrotik LTE1 is no longer (((
there is:
router OS - 6.40.4
hAP (RB951Ui-2nD) powered via POE with 30 meter UTP cable, put into the attic
3g modem e3372h (HiLink) stuck into the mikrotik with USB cable ~ 2 meters long extension and raised to the roof (attached to the mast, is on the street)
the modem itself is completely insulated with glue, that is, it could not get wet …
OS version was lower, updated to the very last, RC scare to install 
access to the mikrotik and 3g modem is not available and is not foreseen, such conditions = (
what could happen and what can be done to return the interface?
