rfc9621v7.txt		rfc9621.txt
	skipping to change at line 616 ¶		skipping to change at line 616 ¶
	robustness to failure, or some other metric.		robustness to failure, or some other metric.
	Beyond these, if the Transport Services API remains the same over		Beyond these, if the Transport Services API remains the same over
	time, new protocols and features can be added to the Transport		time, new protocols and features can be added to the Transport
	Services Implementation without requiring changes in applications for		Services Implementation without requiring changes in applications for
	adoption. Similarly, this can provide a common basis for utilizing		adoption. Similarly, this can provide a common basis for utilizing
	information about a network path or interface, enabling evolution		information about a network path or interface, enabling evolution
	below the transport layer.		below the transport layer.
	The normative requirements described in this section allow Transport		The normative requirements described in this section allow Transport
	Services APIs and the Transport Services Implementations to provide		Services APIs and Transport Services Implementations to provide this
	this functionality without causing incompatibility or introducing		functionality without causing incompatibility or introducing security
	security vulnerabilities.		vulnerabilities.
	3.1. Provide Common APIs for Common Features		3.1. Provide Common APIs for Common Features
	Any functionality that is common across multiple transport protocols		Any functionality that is common across multiple transport protocols
	SHOULD be made accessible through a unified set of calls using the		SHOULD be made accessible through a unified set of calls using the
	Transport Services API. As a baseline, any Transport Services API		Transport Services API. As a baseline, any Transport Services API
	SHOULD allow access to the minimal set of features offered by		SHOULD allow access to the minimal set of features offered by
	transport protocols [RFC8923]. If that minimal set is updated or		transport protocols [RFC8923]. If that minimal set is updated or
	expanded in the future, the Transport Services API ought to be		expanded in the future, the Transport Services API ought to be
	extended to match.		extended to match.
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