On Monday, December 23, 2024 11:08:11 AM UTC Kevin P. Fleming wrote: > The DSYNC record contains the name of the target and a port number, but no > indication of which flavor of DNS transport should be used to connect to > that port to deliver the NOTIFY. If the port is 53 then Do53 over UDP seems > like a reasonable choice, but if the port is 853 then it could be either > DoT or DoQ. if the port is 443 then presumably DoH would be used. if it's > not one of those... then plain DNS over UDP?
port numbers should not be specified in this record (or in SRV; we made a mistake there.) instead the transport should be an optional parameter where if absent a reasonable set of transports should be tried (same as for QUERY). -- Paul Vixie
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