AllowList= and DenyList= filter only DHCPOFFER messages. So, if RapidCommit= is enabled, then networkd unconditionally accepts a rapid ACK message even if its sender is filtered out by the lists. As AllowList=/DenyList= implemented earlier than RapidCommit=, so enabling RapidCommit= unconditionally by default may break existing setups that use AllowList=/DenyList=. Let's disable RapidCommit= by default when AllowList=/DenyList= is enabled. Still the setting can be enabled by setting explicitly even AllowList=/DenyList= is also specified.
System and Service Manager
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