Strange message I get ONLY when connect to 5 GHz

[aspen63]

Hi!
I use different SSIDs on my RT-AC66U and most of the time I use 2.4 due to range issues. However if I connect to 5 with my iPad I quite often (once a day at least) notice that internet traffic stops completely and when I try to connect to the router I get the message

"Settings have been updated. Web page will now refresh.
Changes have been made to the IP address or port number. You will now be disconnected from RT-AC66U.
To access the settings of RT-AC66U, reconnect to the wireless network and use the updated IP address and port number."

That forces me to toggle off and on wi-fi switch on iPad in order to restore connection. I would guess that it has something to do with expired lease time and range issues but I experience this even when my iPad is in immediate vicinity of the router and I NEVER EVER experienced such a problem when connected to 2.4. I encountered this on different firmwares including the latest build. Am I alone having such a problem?

 

[gds]

I see the same message but for a different reason, nothing to do with using 5Mhz. For me I was trying to set SSH access via WAN but I wanted it to only accept ssh connection from a single IP address. All I saw on the Admin page was to restrict WAN http connection to a set of addresses. But was not sure it would also restrict ssh, but tried it anyhow. So when I entered the IP address I wanted to allow for ssh in the list at the bottom of the page (without allowing HTTP connections from WAN) it seems to cause the message and now I can't access the router web page even from LAN.

I can still access the router from WAN and LAN via ssh but have been unable to find where in the file system the IP address I entered was put (or even if it was put somewhere).

gds

 

[L&LD]

Have you tried 'forgetting' that ssid network connection and re-associating it?

 

[aspen63]

If the question goes to me then yes, I have.