Update draft-ietf-tls-esni.md

Co-authored-by: Benjamin M. Schwartz <[email protected]>

draft-ietf-tls-esni.md

@@ -935,9 +935,9 @@ vector. Clients SHOULD impose the same lifetime and scope restrictions
 that they apply to other server-based
 tracking vectors such as PSKs.
 
-In general, it is safest to try to retrieve a new ECHConfig unless
-a subsequent connection is made shortly after the connection where
-ECH was rejected. This makes it most likely that the client will
+In general, the safest way for clients to minimize ECH retries is to
+comply with any freshness rules (e.g., DNS TTLs) imposed by the
+ECHConfig source. This makes it most likely that the client will
 have up to date information.