6 Transport Layer Implications
6.1 Introduction
The layering model of communication protocols provides a pretty clear boundary between the network layer and the transport layer. In fact, major transport protocols such as UDP and TCP basically work fine over either IPv4 or IPv6. The only major difference is in the endpoint addresses—at least in theory.
Yet we need to consider some nontrivial issues for the operation of the various transport protocols over IPv6. Regarding the protocol, the elimination of IP-layer checksum may impose special consideration on the upper layer checksums. Also, various types of IPv6 properties require specific considerations for the transport layer operation.
Other issues arise with the API usage. [RFC3493] allows ...
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