| RFC | Status | Reference | Notes |
|---|---|---|---|
| 5841 | Informational | R. Hay; W. Turkal (1 April 2010). TCP Option to Denote Packet Mood. Independent Submission. doi:10.17487/RFC5841. ISSN 2070-1721. RFC 5841. | This is an April Fools' Day Request for Comments. |
| 5880 | Proposed Standard | D. Katz; D. Ward (June 2010). Bidirectional Forwarding Detection (BFD). Internet Engineering Task Force (IETF). doi:10.17487/RFC5880. ISSN 2070-1721. RFC 5880. | Updated by RFC 7419, 7880 and 8562. |
| 5881 | Proposed Standard | D. Katz; D. Ward (June 2010). Bidirectional Forwarding Detection (BFD) for IPv4 and IPv6 (Single Hop). Internet Engineering Task Force (IETF). doi:10.17487/RFC5881. ISSN 2070-1721. RFC 5881. |
