Upgraded to RH Fedora 20, now my computer hostid = 00000000 and Matlab won't start

This license server problem under Linux came up long ago when I first installed Matlab on my computer (no eth0 interface), and was solved by

      # yum remove biosdevname

Since upgrading to Fedora 20, I ran the yum command again, but there's still no eth0 interface, and hostid still is zero, hence no Matlab.

Answer 1

[Bernard]

It works with fedora 20 !

http://unix.stackexchange.com/questions/81834/how-can-i-change-the-default-ens33-network-device-to-old-eth0-on-fedora-19

The easiest way to restore the old way Kernel/modules/udev rename your ethernet interfaces is supplying these kernel parameters to Fedora 19:

    net.ifnames=0
    biosdevname=0

To do so follow this steps:

    Edit /etc/default/grub
    At the end of GRUB_CMDLINE_LINUX line append "net.ifnames=0 biosdevname=0"
    Save the file
    Type "grub2-mkconfig -o /boot/grub2/grub.cfg"
    Type "reboot"

If you didn't supply these parameters during the installation, you will probably need to adjust and/or rename interface files at /etc/sysconfig/network-scripts/ifcfg-*.

Up to Fedora 18, just biosdevname=0 was enough.

As an example, in a certain machine, in a exhaustive research, I got:

-No parameters: NIC identified as "enp5s2". -Parameter biosdevname=0: NIC identified as "enp5s2". -Parameter net.ifnames=0: NIC identified as "em1". -Parameter net.ifnames=0 AND biosdevname=0: NIC identified as "eth0".

[Alan]

Cheers!