@TP-Link Does this WAN/LAN auto-sensing only effect ethernet connections? I ask because every time I lose internet connectivity on my M5s I lose 'all' LAN connections - wired as well as wifi.

I understand the 'feature' (and totally disagree with your method) and how it would prevent ethernet connections but is there some sort of direct link between the LAN port and the wifi ability?

Whenever the internet connection goes down none of my TVs (with nVidia Shields and connected HDDs) can access my stored media via wifi.

@TP-Link Seriously, how is that even a feature for consideration? It can't be a setup that passed quality control to go into release for consumers.

It has to be addressed ASAP!

  @TP-Link  I just spent many hours with Ethernet issue.  I discovered after a while that things failed if I plugged in a cable to the main unit. I now read this is a known issue that you are not addressing..  Please do so!. I did make changes to my network and moved my router when I got a new internet provider. This very unprofessional on the part of tplink.  I now question if I made the right choice on using this mesh network and I can no long suggest it to others if this issue is not resolved. 

  @TP-Link 

I need to use my DECO in Router mode for the DHCP server.. I also need a LAN port active to distribute IP over RJ45.  This router will not be connected to the internet during its intended use.

I did not think to check whether a LAN port would work if there was nothing connected to WAN.. because it is such a fundementally basic function that exists in every router  known to mankind.   Have i wasted money on your product? I was actually thinking of changing over my home network to a mesh DECO network.. Unless this is addressed immediately i will not be.

@TPlink can you confirm that this is still the case?  That i cannot use LAN without WAN.

Thanks

  @TP-Link This is a major issue! We need access to our wired LANs while we are offline! Fix this immediately!

Terrible mistake by the developers...

  @TP-Link 

Just realized that this...

 It would be time-consuming and confusing to find out which port should be connected to the ISP modem. And supposing that the WAN port is fixed, once this port is broken, the whole Mesh kit would be useless.

...  makes no sense.

The deco already has the ability to select ports for specific purposes, namely IPTV.  This is documented in your own FAQ.

  @TP-Link

If adding an advanced option to lock the LAN/WAN to specific ports won't make the next firmware, what about tweaking the existing auto-sensing to "lock" once the router completes booting up?  People probably aren't running around switching network cables just for fun on running systems. Once the router is up, the WAN is the WAN is the WAN. The odds of that changing while the router is powered up are slim-to-none. So, just lock it.  The auto-sensing did it's job, it can stop polling. Kill the process and let it sleep until the next time the router is powered up.

 Hey @TP-Link, just letting you know that we're still waiting for some sort of options to assign a fixed port for was/lan. Just in case you forgot ;)

  @TP-Link When will this unacceptable bug finally be solved ? Even in your most recent beta-firmware (1.6.0) this is again not mentioned at all while this is and remains a huge bug in your deco system ?! Under no circumstances should the (working) LAN-port be disabled if the Internet connection is lost. The solution to add an extra (wireless) router is a ridiculous idea because you completely lose the Ethernet backhaul which is so highly recommended by TP-link ... a very strange and expensive 'workaround'. As a result, I can no longer offer them to my customers. This bug does render this mesh system useless in many cases, but that doesn't seem to get through to TP-link ... how sad.