Maybe best I start over, it is a group of residential buildings, network access is provided by hotspots from kit around the estate. I have no access to that kit, the kit is controlled by an ISP and implemented as a CGNAT (remember I am an OpenWRT newbie so please do not assume I know what I am talking about).
Users see a wifi radio and connect to it using say a windows laptop and get an IP in the 100.x.x.x range, but the signal strength is awful, so putting in a router as a repeater / access point improves things.
I can see on the OpenWRT status screen that the 100 subnet IP is delivered to the router as follows (The 100. IP changes at random times when a new login is required).
Protocol: DHCP client
DNS 1: 192.168.55.55
DNS 2: 192.168.66.66
Expires: 0h 3m 12s
Connected: 0h 56m 48s
However from the device you cannot connect to the internet. Looking at the router
Normally going to any website would take you to a login screen on a url like this
Even if you go to the appropriate URL you get
This site can’t be reached
www.example.com’s server IP address could not be found.
Checking the connection
Checking the proxy, firewall, and DNS configuration
Running Windows Network Diagnostics
In Windows the Ipconfig shows
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : lan
IPv4 Address. . . . . . . . . . . : 192.168.1.185
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
In Windows a tracerout to 22.214.171.124 knows it is Google
Tracing route to dns.google [126.96.36.199]
over a maximum of 30 hops:
1 1 ms <1 ms <1 ms OpenWrt.lan [192.168.1.1]
2 * * * Request timed out.
... repeated until
30 * * * Request timed out.
then on Router Diagnostics
PING openwrt.org (188.8.131.52): 56 data bytes
--- openwrt.org ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
Also on Router Diagnostics
Traceroute gives following error on a yellow bar after 30s or so
Error: XHR request timed out
and again on Router Diagnostics
NSLookup seems to work
Address 1: 184.108.40.206
Address 2: 2a03:b0c0:3:d0::1af1:1
Does this give any clues to help diagnose where it is going wrong?