Cisco IOS MD5 BruteForce Mask

[royce]

This looks normal. Brute force automatically starts with short masks and then moves on to longer ones. While it's moving through the short masks, they're too short to really make the GPUs work hard, so that's why you're seeing those messages. Notice that when the mask lengthened from 4:

Input.Mode.....: Mask (?1?2?2?2) [4]

... to 5:

Input.Mode.....: Mask (?1?2?2?2?2) [5]

... the warning was not displayed.