Comment 4 for bug 2026824

You have BOOTIF specified on the command line. The device with that MAC address will be used unless overridden by the ip= parameter. The best documentation for the ip= parameter can be found in https://git.kernel.org/pub/scm/libs/klibc/klibc.git/tree/usr/kinit/ipconfig/README.ipconfig

"ip=:::master-cougar:BOOTIF" sets netmask=master-cougar and hostname=BOOTIF. It looks like a colon is missing there. "ip=::::master-cougar:BOOTIF" would set hostname=master-cougar and device=BOOTIF. If you want to use BOOTIF, device should be kept empty instead.

So I suggest trying with "ip=::::master-cougar::dhcp" instead. If you want to rely on the DHCP server to set the hostname, you can just specify "ip=dhcp" instead.