I have 1 interface that show me the follow:
status: unknown
But, when I make pings outside from mk works fine, the problem is that I can’t ping from the lan host to Internet (yes to mk).
What could it be ?
Thanks !
When you see status: unknown are you MAC-telnet in winbox or you going through terminal directly?
I’m login in via ssh
I’ve seen this before too. I don’t know what causes it, but it seems like the ethernet just isn’t negotiating properly. To clear it out, I’ve forced the interface to renegotiate by either disabling and re-enabling the inteface (unless you are behind it - don’t lock yourself out 
) or you can also uncheck autonegotiation and click apply, then go back and check it again and hit apply. That seems to force renegotiation without too much of a chance that you’ll lock yourself out of the router.