https://mailarchive.ietf.org/arch/msg/vcarddav/YA3Z97PgJ0TyLSBV2aKx4VbJmlY/
[VCARDDAV] [Technical Errata Reported] RFC6350 (4213)
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https://mailarchive.ietf.org/arch/msg/vcarddav/2Y9WQEdCB8CyfLdp2QEqKImTDlU/
[VCARDDAV]Re: [Technical Errata Reported] RFC6350 (8092)
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https://mailarchive.ietf.org/arch/msg/vcarddav/YBCqgnBqweS0PrwKbxWqzatnqtE/
[VCARDDAV] [Errata Verified] RFC6350 (4246)
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