I have an ASUS RT-N66U. I am running tomato-K26USB-1.28.RT-N5x-MIPSR2-116-AIO-64K.trx on it.
I am using PPPoE on the WAN side which is connected to an ONT.
I wanted to use Google's DNS servers rather than those provided by my ISP. So I configured 18.104.22.168 and 22.214.171.124 under Basic > Network > LAN > Static DNS in the first two entries. I left the third entry 0.0.0.0. I defaulted the rest of the settings in this section. However, after saving the settings, the WAN connection drops and the router is not able to connect to it again. I have to reset the DNS IPs to 0.0.0.0 and reboot to connect to the WAN again.
I am new to Tomato USB. Am I doing something incorrect to achieve what I want? How do I debug this issue?