| RFC | Status | Reference | Notes |
|---|---|---|---|
| 4115 | Informational | O. Aboul-Magd; S. Rabie (July 2005). A Differentiated Service Two-Rate, Three-Color Marker with Efficient Handling of in-Profile Traffic. Network Working Group. doi:10.17487/RFC4115. RFC 4115. | |
| 4147 | Informational | G. Houston (Aug 2005). Proposed Changes to the Format of the IANA IPv6 Registry. Network Working Group. doi:10.17487/RFC4147. RFC 4147. | |
| 4191 | Proposed Standard | R. Draves; D. Thaler (November 2005). Default Router Preferences and More-Specific Routes. Network Working Group. doi:10.17487/RFC4191. RFC 4191. | |
| 4193 | Proposed Standard | R. Hinden; B. Haberman (October 2005). Unique Local IPv6 Unicast Addresses. Network Working Group. doi:10.17487/RFC4193. RFC 4193. |
