ASUS RT-AC56R Router Firmware 3.0.0.4.374.339

Fixes:

- Fixed OpenVPN server .ovpn file exporting issue while changed the protocol to TCP.
- Fixed PPTP VPN client related issues.
- Applied memory leak patch in media server. 　
- Improved the 2.4GHz wireless throughput.
- Improved the samba throughput while IPv6 enabled.
- Adjusted 2.4GHz power saving algorithm to fix slow wireless in some special scenarios.
- Fixed ASMedia 1053E USB 3.0 controller compatibility issue.
- Fixed IPv6 related issues
- Fixed quick internet setup UI issues when setup the router by wireless client.
- Fixed WPS push button related issues.
- Fixed the security related issues for httpd.
- LAN user can now connect to OpenVPN server with DDNS name.
- Fixed IPv6 default route missing issue.
- Fixed BitTorrent related issues.

Added:

- Added OpenVPN server.
- Added OpenVPN/ PPTP/L2TP client.
- Some devices like set top box, smart TV or Blu-ray player are not able to establish VPN connection. VPN client in router can help these devices to connect to VPN server.
- Added roaming assistant: allow to set the minimum RSSI to disconnect clients and let clients reconnect to Ap with better signal.
- Added import CA file and manual edit option in OpenVPN client
- Added option for tls-auth in OpenVPN server
- Added private WAN IP checking in VPN server page.

Modified:

- Enhanced FAT32 read/write speed
- Modified roaming assistance algorithm for better roaming experience.