I have IPoE running on multiple networks with MX6x devices  (NBN connections). You shouldn't need bridge mode imho. I've found with IPoE from the ISP, treating it like DHCP works best. On the Dashboard this is what I did and the IPv4 & IPv6 was auto configured from the ISP to the MX. Never got on a call with the ISP. Security & SD WAN > Appliance Status > Uplink > Configure WAN 1 WAN Config = Enabled Connection Type = Direct VLAN ID = leave blank, I didn't have to change this. IPv4 & IPv6 leave as Auto. It takes a good 10 minutes sometimes for the ISP to issue the IP down to the MX, but the more sites I've rolled out IPoE has been a breeze since I just copy and paste those network configs and don't have to punch in convulated usernames and passwords for PPPoE ... View more