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25 lines
1.9 KiB
Markdown
25 lines
1.9 KiB
Markdown
## Transport protocols
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Applications can readily be updated to work in dual stack mode, because the transport layer is very little affected by IPv6. Therefore, IPv6 supports all the common transport protocols:
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- UDP. There is no separate specification for UDP over IPv6; [RFC768](https://www.rfc-editor.org/info/rfc768) still applies! However, the UDP checksum is mandatory for IPv6 (since the IPv6 header itself has no checksum), except as allowed by [RFC6936](https://www.rfc-editor.org/info/rfc6936).
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- UDP-lite \[[RFC3828](https://www.rfc-editor.org/info/rfc3828)] also supports IPv6. There is interesting background on UDP and UDP-lite in [RFC8304](https://www.rfc-editor.org/info/rfc8304).
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- TCP. IPv6 support is fully integrated in the latest TCP standard \[[STD7](https://www.rfc-editor.org/info/std7)].
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- RTP fully supports IPv6 \[[RFC3550](https://www.rfc-editor.org/info/rfc3550)].
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- QUIC fully supports IPv6 \[[RFC9000](https://www.rfc-editor.org/info/rfc9000)].
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- SCTP fully supports IPv6 \[[RFC4960](https://www.rfc-editor.org/info/rfc4960)].
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- MPTCP fully supports IPv6 \[[RFC8684](https://www.rfc-editor.org/info/rfc8684)].
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Also, the secure transports TLS, DTLS and SSH all work normally with IPv6. So does SIP (Session Initiation Protocol \[[RFC3261](https://www.rfc-editor.org/info/rfc3261)]), which does not require NAT traversal support (STUN) in the case of IPv6.
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All quality of service and congestion control considerations should be approximately the same for IPv4 and IPv6. This is why [RFC2474](https://www.rfc-editor.org/info/rfc2474) defined differentiated services identically for both versions of IP, and the same applies to ECN (Explicit Congestion Notification \[[RFC3168](https://www.rfc-editor.org/info/rfc3168)]).
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### [<ins>Previous</ins>](Routing.md) [<ins>Next</ins>](Extension%20headers%20and%20options.md) [<ins>Chapter Contents</ins>](2.%20IPv6%20Basic%20Technology.md)
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