On 2013-03-13T02:35:06+0100, oliver domke <[email protected]> wrote: > You can setup multiple servers, but only one IP is fetched from a DNS > server at a time. That's a fact of the DNS system. If IPv6 is running > properly, AAAA records are priorised. That means that every client able to > use IPv6 will use IPv6.
That's not true, a DNS answer can certainly contain multiple A and AAAA records. Just try "host -v 2.pool.ntp.org" and you'll see. If you were talking specifically about ntpd, that's also not the case with the "pool" configuration command in recent ntpds: http://www.eecis.udel.edu/~mills/ntp/html/discover.html#pool The pool command will use IPv4 and IPv6 addresses (I assume it only uses one or the other if you're single-stacked, but all my machines are dual-stack, so I can't test that). ntp 4.2.6 has the pool command, and 4.2.7 (the development version) improves pool behavior. IMO the pool command should be the recommended configuration on http://www.pool.ntp.org/en/use.html but then you might have to complicate things by talking about compatible software versions. -- Kenyon Ralph
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