Description of problem: If selinux is enabled (and enforcing) ethtool will provide no output and thus the boot scripts can not determin the rgith interface to use in the case of BOOTIF=link. Version-Release number of selected component (if applicable): 2.4.0-1.1 How reproducible: always Additional info: After installation: $ ethtool eth0 $ setenforce 0 $ ethtool eth0 ... lots and lots of informations...
Maybe it was to early to blame selinux for this, it could also be bug #833088
The problem seemed to be that the interfaces need to be brought up before the link status can be checked with ethtool: http://gerrit.ovirt.org/#/c/5450/
Tested as follows: 1. Build ISO with above patch 2. Append "BOOTIF=link storage_init=/dev/vda" in a VM booting that iso 3. Wait for auto install to finish 4. Boot into single mode in installed VM 5. Set admin password by running ovirt-config-password and reboot 6. Login to TUI and check network connectivity = Correct/first connected NIC was choosen