Test version: rhev-hypervisor7-7.1-20150312.0.iso ovirt-node-3.2.1-10.el7.noarch Test steps: 1.BOOTIF=em1 storage_init=/dev/sda management_server=$RHEV-M_IP firstboot Test result: Register to rhevm3.5 success when auto install rhevh7.1 with "management_server=$RHEV-M_IP" parameter. Still failed with "BOOTIF=$MACAddress storage_init=/dev/sda management_server=$RHEV-M_IP firstboot", since dougsland has report a new bug 1200207 to track using "BOOTIF=$MACAddress" issue. so verified this bug on "BOOTIF=em1 storage_init=/dev/sda management_server=$RHEV-M_IP firstboot" parameters.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2015-0903.html