Hello
I have such problem, I have 6 mikrotik routerboards connected to each other,
10.1.1.1 <------> 10.1.2.1
10.2.1.1 <------> 10.2.2.1
10.3.1.1 <------> 10.3.2.1
today 10.1.1.1 and 10.2.1.1 stopped working, than i have connect my laptop to 10.2.2.1 and in my winbox a saw 10.2.1.1, I have logged in and problem was that mikrotik was working but on intarfesis ethernet tx rx bytes was zero, what can be the problem???