[Bug 1877643] Re: netplan.io 0.98 introduced more strict parsing of bonding mode, causing failures at boot for existing systems

[Łukasz Zemczak]

** Changed in: netplan.io (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1877643

Title:
  netplan.io 0.98 introduced more strict parsing of bonding mode,
  causing failures at boot for existing systems

Status in netplan.io package in Ubuntu:
  Invalid
Status in netplan.io source package in Bionic:
  In Progress

Bug description:
  As noted in
  https://github.com/CanonicalLtd/netplan/pull/97#issuecomment-625868233
  , netplan.io 0.98 has introduced stricter validation rules for netplan
  yaml compared to previous versions.  This causes previously accepted
  netplan yaml to fail to validate and therefore fail to apply,
  regressing users' networks after SRU upgrade.

  It may be appropriate from an upstream POV to make the validation of
  input more strict over time, but it is never acceptable for an SRU to
  regress the interpretation of user config in this manner and cause
  config to fail to apply.  This PR either needs to be reverted for
  bionic, or it needs to be modified to treat unknown modes as a warning
  instead of a failure.

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