M1 gateway changed DCHP off, ip passthrough was on.

M1 gateway changed. Dhcp off , ip passthrough was on. I  do not want to factory reset the m1. 

I WAS connected to my home router was i have already factory reset so no logs, i also reset my tcp/ip settings. flushed DNS cache. 

The m1 does have internet and connecting by ipv6 with the WIFI adapter reading, AND what looks to be an ethernet address, 169.254.100.138 and subnet 255.255.0.0

I've tried using a static ip on the wifi adapter, where it is still connecting to internet. to reach the gateway. Someone told me to use a arp.. but that did not work .. I am not a that great at technology but can understand how to use commands. 

Any way for me to get into my ipv6 gateway, a program that shows the gateway, without factory resetting the m1.

Thanks.