Hi, I am sharing my wireless to my roommate, just to limit their usage.
I have change NAS IP address within DHCP range, reboot NAS. Browse through internet via dlink mobile app shows offline after 5 minutes. Browse through DLNA mobile device via internal LAN shows online, even on hibernate mode also will auto tuned it on, stream mp4 work fine.
Then, shutdown and reboot all devices (BTU, modem router and NAS), browse through internet only alive for 5 minutes, browse through internal LAN all work just fine.
:-(