Tag: license-problem-non-free-RFC-BCP78 Severity: error Check: cruft Explanation: The given source file is licensed under the non-free RFC license (BCP78). . The majority of IETF documents, such as RFCs, are not licensed under DFSG-free terms, and should thus not be included in Debian main. . If this file is multi-licensed, please override the tag. See-Also: https://wiki.debian.org/NonFreeIETFDocuments