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203 Non-Authoritative Information (since HTTP/1.1) The server is a transforming proxy (e.g. a Web accelerator) that received a 200 OK from its origin, but is returning a modified version of the origin's response. [1]: §15.3.4 [1]: §7.7 204 No Content The server successfully processed the request, and is not returning any content.
As a consequence, err will hold the status of the SHA1 update operation, and signature verification will never fail. [5] Here, the unreachable code is the call to the final function. [6] Applying the Clang compiler with the option -Weverything includes unreachable code analysis, which would trigger an alarm for this code. [6]
The solicited-node multicast addresses are generated from the host's IPv6 unicast or anycast address, and each interface must have a solicited-node multicast address associated with it. A solicited-node address is created by taking the least-significant 24 bits of a unicast or anycast address and appending them to the prefix ff02::1:ff00:0 / ...
ICMPv6 provides a minimal level of message integrity verification by the inclusion of a 16-bit checksum in its header. The checksum is calculated starting with a pseudo-header of IPv6 header fields according to the IPv6 standard, [6] which consists of the source and destination addresses, the packet length and the next header field, the latter of which is set to the value 58.
[1] For IPv4, no black hole address is explicitly defined, however the reserved IP addresses can help achieve a similar effect. For example, 198.51.100.0 / 24 is reserved for use in documentation and examples [2]; while the RFC advises that the addresses in this range are not routed, this is not a requirement.
224.0.1.40 The Cisco multicast router AUTO-RP-DISCOVERY address is the destination address for messages from the RP mapping agent to discover candidates. Yes 224.0.1.41 H.323 Gatekeeper discovery address Yes 224.0.1.129–132 Precision Time Protocol (PTP) version 1 messages (Sync, Announce, etc.) except peer delay measurement Yes 224.0.1.129
Starting on 24 February 2008 at 18:47 UTC, [1] YouTube was unavailable for around two hours because Pakistan Telecom, a Pakistani telecommunication company, had mistakenly claimed YouTube's IP address space intended to block access to YouTube within Pakistan; the Border Gateway Protocol data was accidentally broadcast to other service providers ...
[1] A majority of apps and websites blocked are the result of the companies not willing to follow the Chinese government's internet regulations on data collection and privacy, user-safety, guidelines and the type of content being shared, posted or hosted.