I can confirm that this Bug is again present in Debian 9.
Motherboard is Asus AB350 Gaming K4 P2.60
Internal NIC is detected as enp10s0 (nr. 2 in list by `ip address show`) (no wire plugged)
External NIC is detected as enp7s0 (nr. 3 in list by `ip address show`) (wire plugged)
Debian 9 tries to get DHCP Config via internal NIC - fails, and aborts the installation process.
I can confirm that this Bug is again present in Debian 9.
Motherboard is Asus AB350 Gaming K4 P2.60
Internal NIC is detected as enp10s0 (nr. 2 in list by `ip address show`) (no wire plugged)
External NIC is detected as enp7s0 (nr. 3 in list by `ip address show`) (wire plugged)
Debian 9 tries to get DHCP Config via internal NIC - fails, and aborts the installation process.
Debian 8 Works with the right choose of interface
Even BOOTIF does not have any affect here.