[cloud] #98: Consider using systemd-networkd in cloud images

[Fedora Cloud Trac Tickets]

#98: Consider using systemd-networkd in cloud images
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 Reporter:  dustymabe         |      Owner:
     Type:  enhancement       |     Status:  new
 Priority:  normal            |  Milestone:  Future
Component:  Cloud Base Image  |   Keywords:
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 Sometimes network bringup for cloud images is racy because some
 environments may be slower than others in initializing hardware, etc.. One
 example of some complaints is in:

 https://bugzilla.redhat.com/show_bug.cgi?id=1194623

 A proposal there is to use systemd-networkd (rather than network scripts)
 so that the network can be brought up only after the device is ready. The
 problem here is cloud-init doesn't know about systemd-networkd and
 statically configured networking via cloud-init won't work.

 Statically configured networking in cloud-images is a small use case but
 still one we want to consider before making this change.

 We also need to get with releng to write out a systemd-networkd file
 rather that a network scripts file.

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Ticket URL: <https://fedorahosted.org/cloud/ticket/98>
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