Hi,
Today i found that if i use RB133 with DHCP Server it hangs cpu 100% and after that reboot.
Here is screen. Cannot post support.rif
email it to support@mikrotik.com
from mikrotik download page
RB111, RB112, RB133C, RB150 devices are not supported in v6, please use v5.
It is diferents models 133 a 133C. This problem is with 133 and this model is supported.