>>108610799
Do this:
>>108610954
This is literally all you need in /etc/config/network for a nice ISP (like I have) that does standard DHCP with no VLAN tags or PPPoE fuckery, etc:
config interface 'wan'
option proto 'dhcp'
option device 'eth0'
config interface 'wan6'
option proto 'dhcpv6'
option device 'eth0'
option reqaddress 'try'
option reqprefix '56'
option norelease '1'
Also if you can SSH into it from the LAN then check the logs:
logread -e netifd
logread -e network
logread -e dhcp
Etc.