diff --git a/draft-ietf-quic-transport.md b/draft-ietf-quic-transport.md index 9b7505f521..3eb58b146a 100644 --- a/draft-ietf-quic-transport.md +++ b/draft-ietf-quic-transport.md @@ -5974,13 +5974,14 @@ be influenced by an attacker. ## Version Downgrade {#version-downgrade} -This document defines QUIC Version Negotiation packets {{version-negotiation}}, -which can be used to negotiate the QUIC version used between two endpoints. -However, this document does not specify how this negotiation will be performed -between this version and subsequent future versions. In particular, Version -Negotiation packets do not contain any mechanism to prevent version downgrade -attacks. Future versions of QUIC that use Version Negotiation packets MUST -define a mechanism that is robust against version downgrade attacks. +This document defines QUIC Version Negotiation packets in +{{version-negotiation}}, which can be used to negotiate the QUIC version used +between two endpoints. However, this document does not specify how this +negotiation will be performed between this version and subsequent future +versions. In particular, Version Negotiation packets do not contain any +mechanism to prevent version downgrade attacks. Future versions of QUIC that +use Version Negotiation packets MUST define a mechanism that is robust against +version downgrade attacks. ## Targeted Attacks by Routing