@frollic I soft reset the router. Added PPPoE wan and added it to the wan zone. But not luck .
I want to tell you that when the router is reset, there are three interfaces already created.
1.) Lan bridge
2.) Wan on usb0, which is presumably the lte modem. This is set as dhcp4 client.
3.) Wan6 - dhcpv6 client.
What I did then is added a vlan switch with the 4th ethernet port separated out untagged. I turned it off in the switch which was pre-configured. I then proceeded to add PPPoE interface wanFibre to this switch at eth0.2. Added it to the wan zone. The zone listing changed in the firewall config from
list network 'wan'
list network 'wan6'
to
option network 'wan wan6 wanFiber'
I hope this is correct. If I think about it, you make sense, this should have been enough. But can't get network access on clients. I then made the wan static IP address just to be sure. (This is a related topic: Port forwarding and WAN ping reply don't work). No luck.
Any help is really appreciated