Duplicate (repetitive) sstp connections from one host

RouterOS General
1

Hello, colleagues!
Pkg: 6.22
Firmware: 3.19

I have troubles with frozen sstp connections. I think it happenning after broken connection from VPN client. But router don’t cleaning it!
fr1.png
So I DHCP pool expended very fast, and I have to cleaning frozen connections by hands 8(

Could you help me?

2

Updating packages to 6.24 didn’t solved this problem 8(