Note retransmission logic different in security considerations

Closes #2
quicwg · Jul 20, 2021 · d021fc9 · d021fc9
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commit d021fc9
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diff --git a/draft-ietf-quic-datagram.md b/draft-ietf-quic-datagram.md
@@ -300,6 +300,11 @@ either by 0-RTT or 1-RTT keys.
 Application protocols that allow DATAGRAM frames to be sent in 0-RTT require a
 profile that defines acceptable use of 0-RTT; see {{Section 5.6 of RFC9001}}.
 
+The use of DATAGRAM frames might be detectable by an adversary on path that is
+capable of dropping packets. Since DATAGRAM frames do not use transport-level
+retransmission, connections that use DATAGRAM frames will generally have different
+loss recovery patterns.
+
 # IANA Considerations
 
 This document registers a new value in the QUIC Transport Parameter Registry: