Kickstart installation fails with a dracut error "Sorry, automatic calculation of netmask is not yet supported"

Solution Verified - Updated -

Issue

  • Copying the /root/anaconda-ks.cfg file from a successful interactive Red Hat Enterprise Linux 7 installation and using it for an automated kickstart of the same server yields the error:
[5.042300] dracut: FATAL: Sorry, automatic calculation of netmask is not yet supported
[5.042488] dracut: Refusing to continue
  • It stops and reboots after this message.

Environment

  • Red Hat Enterprise Linux 7.0

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