I've had that happen a couple of times with an MX67.  Support claimed that there was an upstream firewall on one of the WAN circuits blocking communication, but both connections are direct to the WAN circuits. ... View more

I noticed some problems with the 17.10.2 version, but this doesn't happen to everyone, what I suggest (if possible) is to downgrade to the 16.16.x version. ... View more

That's great news, sounds like dodgy hardware then. Thanks for letting me know, I will sleep easier knowing that I dont have to worry about hitting the same issue on my MX84's ... View more