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Klaus Aehlig authored
Some new features, like client-specific ssl certificates, require additional steps at downgrade, so add this to the design. Two things should be noted. - There cannot be explicit version-specific upgrade actions; upgrades are carried out by the old version which cannot know about new features coming with the new version. - Any version-specific downgrade tasks need to be carried out before switching the binaries, so that we can resume the downgrade still using the version knowledgeable of the new features. Signed-off-by: Klaus Aehlig <aehlig@google.com> Reviewed-by: Helga Velroyen <helgav@google.com>
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