Help Problem Hotspot

Good Afternoon friends. I use Mikrotik with Hotspot, has happened a situation very stranger. One mac of user is connecting with several ips of my band dhcp. Friends help to decide this problem? He used version 2.9.27 and I brought up to date for 2.9.35 and continues the problem.

  1. Log entries mean, that HotSpot user has reached limit for the simultaneous logins. The following limit is specified under ‘ip hotspot user profile set profile_name shared-users=’

  2. Most likely the following hosts is running bridge or router, that multiple users are connected to it.