Hello, this is my first post, so please be kind… 
I have mikrotik model: CCR1036-12G-4S
current-firmware: 3.10
Software 6.10
If i try to change mtu router hangs until rebooted (hangs means all interfaces stops passing traffic)
tried to enter command from serial console, - no error, but the same result…
Maybe some ideas?!
p.s. its even hangs if i try to set mtu on a disabled interface… and one more thing, - after amtu changes traffic generator (btest server) are not working anymore…