I got a 5G gateway from T-Mobile and it doesn't support bridge mode over its LAN ports. So I connected the LAN port from the 5g device to the WAN port of my Routerboard. The 5g gateway is 192.168.12.0/24 and the routerboard is 192.168.10.0/24
I'm having some issues:
1 - DHCP requests/responses are crossing over the WAN port and I'm getting LAN ips from the 5g gateway to the devices behind the Routerboard.
2- I'm not able to get any 192.168.12.x IP on the WAN port of Routerboard from the DHCP server of the 5g gateway.
3- I'm not able to issue DNS requests for any static dns server requests to the Routerboard.
Please help, thanks