I'm feeling stupid. I am trying to configure a new OpenWrt router to replace an older OpenWrt device.
My connection to the internet is through a LTE bridge - my cell phone carrier provided a gizmo with an Ethernet port that is in bridge mode. It assigns a DHCP address of 10.19.x.x (through their CGNAT) to the router's WAN port.
The older OpenWrt device works just fine. My memory is that I used substantially the default configuration, then plugged it into the LTE Bridge. The WAN port got a DHCP address, and I was able to connect, finish configuration, and smile.
This new device (ArcherC7v2, flashed with 21.02.1) connects to the LTE Bridge, gets the correct DHCP address, but "nothing works". More specifically:
I can ping public IP addresses (184.108.40.206, 220.127.116.11, and others addresses that I have memorized) Curiously, my cell carrier doesn't seem to be passing traffic for 18.104.22.168, so I won't use that for a DNS server.
No DNS lookups work.
nslookupfrom the command line of the router fails.
root:~# nslookup gstatic.com 22.214.171.124 ;; connection timed out; no servers could be reached
In Network -> DHCP & DNS, I have
- set DNS Forwardings to 126.96.36.199 and 188.8.131.52
in Network -> WAN settings, I have
- UNchecked the "Use DNS servers advertised by peers"
- Use custom DNS servers of 184.108.40.206 and 220.127.116.11
What am I missing? Many thanks.