Cannot get a dhcp address from my isp

I cannot seem to pull a DCHP IP address from my ISP, it works fine if i use my dlink router but UTM9 cannot seem to get an IP.

I am also having difficulty determining which NIC is internal and which NIC is external.

Have tried ethtool -p eth0 but being a virtio interface this does not work

PLEASE help how do i determine which NIC is which