3G/4G dongles
1. Support Yota LTE dongle LU150
2. Support ZTE LTE dongle MF821
3. Support 3G dongle Q110
4. Support Huawei EC306

376.49 (21-Dec-2014)
  - NEW: Merged with Asus GPL 376_3677.  This new code
         includes a lot of changes related to USB modem
         support.
 - NEW: IPv6 handling based on dnsmasq + odhcp6c.  This new
        code which has been developped by Asus these past few
        months but kept disabled so far has been enabled.
        Initial tests show much better reliability with
        different ISPs.
 - NEW: Added IPv6 support to DNSFilter (currently only
        Yandex has IPv6 servers).  Note that unlike IPv4
        filtering, we cannot automatically NAT queries
        to the desire server, so the current implementation
        works like Asus's YandexDNS service, where IPv6 servers
        are simply returned to DHCPv6/RA client queries,
        and ip6tables ensures that you cannot override
        them, by rejecting connection to other DNS servers.
 - CHANGED: Merged newer DPI engine from 378_3123 beta
            (AC87)
 - CHANGED: Removed SSLv2 and v3 support from OpenSSL
            (we had already stopped using these in
            376.48, so this removes unused code)
 - CHANGED: The VPN webui is now a bit closer to Asus's code.
            This will mostly make it easier to keep in
            sync with future changes to that UI by
            Asus (they rearranged the layout a bit in
            376_36xx).
 - CHANGED: Updated OpenVPN to 2.3.6
 - CHANGED: Reverted to Asus's max-lease number calculation
            for dnsmasq
 - CHANGED: Hide wireless key on settings page unless field
            has focus (patch by John9527)
 - CHANGED: Ported USB 3.0 (XHCI) kernel driver from
            Netgear GPL (which seems to have in turn
            backported it from upstream kernel 3.x)
 - CHANGED: Updated Quantenna to v36.7.3.23 (AC87)
 - FIXED: vsftpd wasn't properly compiled with SSL
          support.
 - FIXED: MAC filtering couldn't be disabled on Guest
          networks (Asus bug) (Patch by John9527)
 - FIXED: Various fixes and tweaks to the new IPv6
          code from Pinwing and saintdev
 - FIXED: Editing a client on the networkmap would
          cause any matching DHCP reservation entry to
          lost its hostname
 - REMOVED: The web redirection control setting was
            removed, as it is being replaced by the
            (simpler) redirection setting Asus added
            to the System page.

376.49_2 (23-Dec-2014)
  - FIXED: Asus DDNS couldn't be configured on the webui
  - FIXED: OpenVPN server wouldn't let you edit user accounts
  - FIXED: Missing DLNA icon on clients (Asus bug) (N66, AC66)

376.49_4 (27-Dec-2014)
  - FIXED: WAN page error when entering a hostname, and broken
           UPNP FAQ link
  - FIXED: OpenVPN Server wasn't showing the Advertize DNS to
           Client option (regression from 3677 merge)
  - FIXED: bootloop when enabling Traditional QoS (or any other
           feature that forces CTF to be disabled) due to
           FA being left enabled (Asus bug) (AC87)