MikroTik RB411R Router Board Firmware 6.16

Fixes:
- 802.11ac support added in Wireless-fp package for QCA9880/9882 rev2 (-BR4A) chips
- Winbox - Fixed random disconnection over encrypted tunnels
- L2TP, PPTP, PPPoE - Fixed possible packet corruption when encryption was enabled
- oVPN - Fixed Ethernet mode
- Certificates - Use SHA256 for fingerprinting
- IPSec - Fix AH proposal and problem when sometimes policy was not generated
- SNMP - Support AES encryption (rfc3826)
- L2TP server: Added option to enable IPsec automatically
- PoE-Out: Added power-cycle-ping and power-cycle-interval settings
- GPS - Increased retry duration to 30 seconds
- Time-on router boards, current time is saved in configuration on reboot and on clock adjustment, and is used to set initial time after reboot
- SNTP - Disabling/Enabling client was causing dynamic-servers to be ignored (bug introduced in 6.14)
- CCR - Fixed rare file system corruption when none of configuration could be changed or some of it disappeared
- IPSec - Allow multiple encryption algorithms per peer
- eMail - Support tls only connections
- SMB - Fixed usb share issues after reboot
- SNMP - Fix v3 protocol time window checks
- Updated timezone information
- Quickset - Added VPN settings for HomeAP mode
- Latency improvements on CCR devices