[Bug 1631474] [NEW] No networking with initramfs-tools 0.122ubuntu8.3 and ip=dhcp boot option

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initramfs-tools 0.122ubuntu8.3 introduced a serious regression where
networking is not initialized when the boot option "ip=dhcp" is
provided. We are seeing this problem in AWS, but cannot confirm if this
issue is specific to AWS or will occur with different hardware or in
different environments.

Removing "ip=dhcp" from the boot options with 0.122ubuntu8.3 results in
networking being configured.

The issue does not occur with 0.122ubuntu8.2 or previous versions when
"ip=dhcp" is set.

AWS has no console so debugging is not a trivial task. I do have a
console log with some output, and will update this bug shortly with it.

** Affects: initramfs-tools (Ubuntu)
     Importance: Undecided
     Assignee: Dave Chiluk (chiluk)
         Status: In Progress

** Affects: initramfs-tools (Ubuntu Xenial)
     Importance: Undecided
         Status: New


** Tags: cpc patch regression-update sts
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No networking with initramfs-tools 0.122ubuntu8.3 and ip=dhcp boot option
https://bugs.launchpad.net/bugs/1631474
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