Buffalo WZR-HP-G300NH r306x Network

I am not sure if this is the right place to report the snapshot problem.

I installed Yesterday's snapsopt (21 Jan 2017, r306x I don't remember the last digit) to WZR-HP-G300NH, and found that the default networking config have some problem.

From inside, I can access the router page, but not the Internet.
From outside, I can telnet and access Luci.
The router can ping and trace route lede webpage, get package install without problem

It seems to me that the network config is in reverse. Although I wanted to change the settings to get it work in LEDE, I can't because it is in a remote site that I cannot go to in this year.

Can anyone have this router take a look on the latest build?

Thanks a lot for your help.

This is the firmware I used:

Tested today with RC-1, no problem now. thanks.