This issue can be reproduced on RouterOS 6.3-6.4-6.5-6.6 as well!!! I had already contacted to support and sent supout file, but every time I get reply to update/upgrade RouterOS again and again from support team. They always asked me to send supout file from newest RouterOS and have not provided an...
The problem is following: The oldest entries are not flushed from cache. During one day we got: /ip route cache print cache-size: 52442 max-cache-size: 65536 This bug is observed only on OS version 6.x. OS version 5.x did not have such issue. Please provide workaround HOW TO FLUSH CACHE.