First, sorry if the question is fool or if the answer already exist but after hours searching I'm becoming mad …
I succesfully connected my 4G USB dongle Huawei E3276s on my Asus RT66U router (for the story, you CANT use the dongle as it on this router, USB port have not enough power, use an USB hub with external power supply or like me, make or buy an Y cable).
Ping tool on tomato works, but I have no internet access on my computer connected via ethernet. I guess it's just a config to do …
I precise that it's a fresh install, just configured 4G in WAN that's all.
Any ideas ?