reply instead of doing it in ntpd itself by getting the time we read
from the socket. based on a diff from mickey hacked in shape by me,
lots of testing and review from ckuethe and sthen, theo and claudio like it
too

input & ok theo

Don't log kiss code for now.

address as ref ID (RFC4330).  ok henning@

return the address of the synchronization source as reference
identification.  Remove the obsolete special casing specified in RFC2030.
ok henning@

This allows recovery after an IP address change (e.g. on dialup links).
Also move the update of "nextaction" timeout below the deadline check.
OK henning@

empty while in the -s period, so the poll timeout actually times out
if there are no interfaces available. ok henning@

do not have more than one dns request outstanding per peer. resolves
slow recovery when resolving fails initially, without clogging the
pipe with lots of dns requests; tested by Jason George; ok deraadt@

time, and make ntpd use that to send the next uery to an ntp peer and the
like. this has the advantage that changes to the clock do not interfere
with the intervals. for example, when we start on machines without an
RTC and the initial settime (-s) kicks in, intervals were strange.
idea from amandal@entrisphere.com, this implementation by me
tested ckuethe, phessler, mbalmer, ok mbalmer

From: amandal@entrisphere.com

From: amandal@entrisphere.com

too. from amandal@entrisphere.com

overcompensating. From DragonFly, uses recent adjtime(2) changes,
so you'll need a recent kernel. ok henning@

ok henning@

it will wait until the next poll.
ok henning@

first bits from a way to long flight

replies.  ok henning@

eases things
tested by Jason Ackley <jason@ackley.net> Matthias Kilian
<kili@outback.escape.de> Stephen Marley <stephen@marley.org.uk> sturm@
theo ok

comes before the "adjusting local clock by..." one, joerg

From: Joerg Sonnenberger <joerg@britannica.bec.de> of dragonfly

don't query outliers more often than any other server.  ok henning@

them when in debug mode; ok henning@

poll interval;  ok henning@

ntp_settime() -> priv_settime()
ntp_host_dns() -> priv_host_dns()

easier on portable.  ok henning@

plus one

and such