I have installed OpenWrt 17.01.6 on my old D-LINK DIR-600 rev.B2. Lan & Wifi are working correctly however when I try to connect the WAN port to my ISP router (a Huawei HG8045H) as a DHCP client it does not seem to be able to get an IP.
Here is my setup:
When I use it as a dhcp client, udhcpc seems to send requests and that's it : daemon.notice netifd: wan (1888): udhcpc: sending discover
When I use static IP, I can ping 192.168.100.1 but not 126.96.36.199 for example.
Any idea in what could be wrong ? I've even tried to put the IP in DMZ on my ISP router without success.
Thank you in advance.