What actually causes brs_wanlan_conflict.html on Orbi RBR2?

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Captainiowa2 wrote:

I'm on what appears to be a triple-NAT network (setup by my landlord) and on my Apple devices (all that I own), I'm getting a redirect to brs_wanlan_conflict.html. While I eventually want to find a solution, I'm first trying to find documentation for the conditions that actually make that redirect happen. For me, the redirect appears sporadically on popular sites and consistently when invoking certain subdomains (e.g. maps.google.com but not google.com). Does anyone have insight into what's happening and why only some sites are affected? 

 

Also, I anticipate that I'll receive advice to simply not triple-NAT because it adds network complexity and degrades performance. While I appreciate a clean network topology, the unique needs of this building make a triple-NAT sufficient and most cost effective (i.e. using existing equipment). Namely, the goal is to setup three separate subnets for three individuals whose most network instensive needs are to use streaming services and make video calls (i.e. not gaming). 

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Some random comments:

In regard to finding documentation about brs_wanlan_conflict.html, I feel your pain.  My internet searches turn up lots of reports, but no technical explanation at all. There is no public web site with that URL.  There is no Orbi web page with that URL

In itself, "triple Nat" is not the horrible thing we make it out to be.  I have deliberately set up a triple NAT (Orbi router->Archer router->Orbi router-> laptop and found that most web activities worked just fine.(web browsing, video streaming, email).  What definitely does not work are things such as inward VPN, port forwarding, and some video gaming.  Of course one would prefer not to pass data through three routers.

The only solution reported in my searches was to put the Orbi into Access Point (AP) mode.  Still no explanation, but the threads stopped at that point.

It may be time to talk to the landlord and get a detailed explanation of what equipment forms the network in the building. (brand and model number).

I can imagine one ISP device (which should be "only a modem" but may be a combination device).  If it's only a modem, then there needs to be a router to provide connections to three tenants.  https://www.whatismyip.com/  will reveal the public IP address and ISP of the building device.  The Internet IP address on the Orbi web interface "Internet" menu reveals the IP assigned to your Orbi.

The only downsides that I see to putting the Orbi in AP mode are

• You lose control over IP assignment and cannot decide which local IP address to give each device.
  For some of us, that would be a major irritation.  Countless thousands of customers never realize they could do so and could care less.
• It removes your local router's firewall protection from the other tenants.  Your devies should be secure in themselves (firewalls, refusal to accept connections, etc.), so I cannot gauge the severity of any risk.