[ntp:questions] NTP over redundant peer links, undetected loops

Ryan Malayter malayter at gmail.com
Sun Feb 15 19:05:01 UTC 2009

On Sun, Feb 15, 2009 at 12:23 PM, Danny Mayer <mayer at ntp.org> wrote:
> Because I want to get away from the notion that these are meant to be IP
> addresses. In addition in an IPv6-only environment that wouldn't work
> either. Why create work when it's unnecessary just to find a valid IP
> address? In addition with anycast addresses are not globally unique. The
> chances that you will create a non-unique random number within a network
> is extremely low.

It depends on the size of the network. The chances of a duplicate
32-bit number on a network including 65000 hosts is about 40%. The NTP
Pool network, which comprises at least 10^6 hosts, for example, would
have collision probability very close to 1.


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