diff --git a/draft-ietf-quic-transport.md b/draft-ietf-quic-transport.md index 0bf8fd2517..206de16139 100644 --- a/draft-ietf-quic-transport.md +++ b/draft-ietf-quic-transport.md @@ -2430,11 +2430,10 @@ an endpoint MAY send a PING frame once per RTT to solicit an acknowledgment. To limit receiver state or the size of ACK frames, a receiver MAY limit the number of ACK blocks it sends. A receiver can do this even without receiving acknowledgment of its ACK frames, with the knowledge this could cause the sender -to unnecessarily retransmit some data. When this is necessary, the receiver -SHOULD acknowledge newly received packets and stop acknowledging packets -received in the past. Removing ack blocks before the peer has received them -increases the chances the peer never received an acknowledgement, will declare -the packet lost, and spuriously retransmit information. +to unnecessarily retransmit some data. Standard QUIC {{QUIC-RECOVERY}} +algorithms declare packets lost after sufficiently newer packets are +acknowledged. Therefore, the receiver SHOULD repeatedly acknowledge newly +received packets in preference to packets received in the past. ### ACK Frames and Packet Protection