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RFC 2474 — Definition of the differentiated services field (DS field) in the IPv4 and IPv6 headers. Note that the DS field of 8 bits (the bottom two unused) in [ 2 ] was later split into the current 6-bit DS field and a separate 2-bit ECN field.
RFC 2474 (which was released in December 1998) reserved the first six bits of the DS (or IPv4 ToS) field for the Differentiated Services Code Point (DSCP), and RFC 3168 reserved the last two bits for Explicit Congestion Notification.
The RFC specifies this code should be returned by teapots requested to brew coffee. [18] This HTTP status is used as an Easter egg in some websites, such as Google.com's "I'm a teapot" easter egg. [ 19 ] [ 20 ] [ 21 ] Sometimes, this status code is also used as a response to a blocked request, instead of the more appropriate 403 Forbidden.
The procedure is explained in detail in RFC 1071 "Computing the Internet Checksum". [1] Optimisations are presented in RFC 1624 "Computation of the Internet Checksum via Incremental Update", [ 2 ] to cover the case in routers which need to recompute the header checksum during packet forwarding when only a single field has changed.
This is a partial list of RFCs (request for comments memoranda). A Request for Comments (RFC) is a publication in a series from the principal technical development and standards-setting bodies for the Internet, most prominently the Internet Engineering Task Force (IETF).
The meaning of the "detail" field depends on the class and the subject, and are listed in RFC 3463 and RFC 5248. A server capable of replying with an Enhanced Status Code MUST preface (prepend) the Text Part of SMTP Server responses with the Enhanced Status Code followed by one or more spaces.
Use the Sign-in Helper to locate your username and regain access to your account by entering your recovery mobile number or alternate email address.; To manage and recover your account if you forget your password or username, make sure you have access to the recovery phone number or alternate email address you've added to your AOL account.
This is a list of all Internet Relay Chat commands from RFC 1459, RFC 2812, and extensions added to major IRC daemons. Most IRC clients require commands to be preceded by a slash (" / "). Some commands are actually sent to IRC bots ; these are treated by the IRC protocol as ordinary messages, not as / -commands.