What's new in 6.4 (2013-Sep-12 13:52):

*) wireless - improved 802.11n wireless retransmission (doesn't effect nstreme/nv2)
*) ovpn - allow to specify server via dns name;
*) winbox - fixed problem where ipv6 routes with non local link address gateway
   could not be added;
*) fixed watchdog on mipsle boards;
*) traceroute - added count %26 max-hops parameters;
*) traceroute - added back use-dns parameter;
*) fixed usb Yota LTE modem hangup;
*) console - make newly added item names always immediately available;
*) graphing - make sure that interface graphs gets preserved across reboots;