On 4/7/2016 6:28 AM, Sharon Goldberg wrote: > > This non-backwards compatible feature would therefore only be used by > systems that need it, eg those that have two IP addresses. All other > systems could limit the amount of information being leaked in their > refID by using my proposal. >
The number of systems that don't have multiple addresses these days can probably be counted on one hand. All newer O/S's support both IPv4 and IPv6 addresses. Furthermore NTP has broadcast and multicast modes so packets can also arrive over those addresses as well. Harlan and I had a discussion on this yesterday and now I remember why the current preferred server's address is being used in the refID. At the time it was implemented it was meant to prevent timing loops and security was not a worry. In today's world that's the primary worry. Danny _______________________________________________ TICTOC mailing list [email protected] https://www.ietf.org/mailman/listinfo/tictoc
