2.9.17的以下BUG大家有没有试到过？

game168

What's new in 2.9.18:

*) fixed bug - dhcp server, dhcp client and hotspot could show up as
   invalid in case of many (> 10) vlan interfaces;
*) fixed netwatch missing ping replies;
*) added ability to reset counters for single queue;
*) fixed bug - PPTP server started to use 100% CPU after NMAPing it;

What's new in 2.9.19:
*) changed simple queues to work better together with pppoe;
*) added WinBox support in webproxy-test package;
*) PPTP client now uses PPTP TCP keepalives too;
*) changed hotspot not to detect new hosts from broadcast requests;

What's new in 2.9.20:
*) added limit of simultaneous hotspot mac logins to 1 for each MAC address;
*) added WinBox support for routing-test package;
*) fixed PPTP client to not disconnect every 30s on some occasions;

What's new in 2.9.22:
*) fixed MAC address changing in Ethernet like interfaces;

注：以上BUG只是截选的常用部份，源于升级列表