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History log of /src/etc/ntp.conf
RevisionDateAuthorComments
 1.23  28-Oct-2021  kim Fix grammar in comment (affect vs. effect)
 1.22  05-Oct-2020  kim Add iburst to peer and server.
 1.21  04-Oct-2020  kim Use "pool" for the pool.ntp.org servers. Add some new hints.

- Use the "pool" keyword for obtaining servers from ntp.pool.org.
- Add "tos minclock" and "tos maxclock" to limit the number of servers.
- Add "restrict source" to apply appropriate restrictions to servers.
(Specifically "nopeer" cannot be applied to "pool" servers.)
- A single "pool" entry suffices -- using "2.netbsd.pool.ntp.org" so
that we get both IPv4 and IPv6 addresses. (No addresses are returned
for just "netbsd.pool.ntp.org.")
- Add a comment about "tinker panic 0" -- useful for VMs and laptops.
- Add a comment about "discard minimum" -- useful for some SNTP clients.
- Add an explanation for the "limited" restriction keyword.
- Unify whitespace and comment formatting.
 1.20  09-Jan-2017  christos branches: 1.20.6; 1.20.16;
"kod" needs limited.
 1.19  14-Jan-2014  apb branches: 1.19.8;
Don't try to use server-specific "restrict" settings;
they do not work when the server is specified by domain name
and the name is associated with multiple IP addresses.

This also means that uncommenting "restrict default ignore"
will not work, so remove the comments suggesting that.

Also edit some other comments.
 1.18  06-Jan-2014  apb Another comment change, missed in previous commit.
 1.17  06-Jan-2014  apb Attempt to improve comments about how to choose servers,
and about what "tos minsane" does.
 1.16  06-Jan-2014  apb Add several "restrict" lines to the default ntp.conf, with comments.
 1.15  28-Dec-2013  christos put a comment for mode7
 1.14  16-Jan-2012  christos branches: 1.14.2; 1.14.6; 1.14.8; 1.14.16;
use the join URL.
 1.13  16-Jan-2012  christos Instead of using the general servers, use the ones allocated specifically
for the NetBSD project.
 1.12  28-Jul-2011  simonb branches: 1.12.2;
Restore "duplicate" entries, but use 0. and 1. names to ensure that
same hosts aren't used by both entries.
 1.11  28-Jul-2011  mbalmer Remove duplicate (but commented out) entries.
 1.10  09-Jul-2011  christos default mdnstries to 0; most people don't use mdns, so this prevents spurious
warnings.
 1.9  10-Feb-2007  reed branches: 1.9.20; 1.9.28; 1.9.36;
Fix typo/mispelling in comment.
 1.8  07-Dec-2003  fredb Add a synopsis, disclaimer, and a hypertext link to the "real" documentation.
 1.7  07-Dec-2003  fredb Whitespace and punctuation cleanup. Try to fill lines up to 72 columns.
 1.6  07-Dec-2003  fredb Expand the "pool.ntp.org" section. Drop "maxpoll", call for volunteers,
add some example country codes, and use disjoint CNAMES by default, as
discussed in PR misc/23283 (by Adrian 'Dagurashibanipal' von Bidder),
the pool.ntp.org mastermind and maintainer).
 1.5  07-Dec-2003  fredb Add a "tos" directive.
 1.4  24-Sep-2003  agc Default to the public servers from the ntp public pool project.

The servers will be dynamically assigned on a round-robin basis from
a list of volunteers.

Fix provided by Wolfgang Rupprecht in PR 22416
 1.3  08-Mar-2001  lukem whitespace police
 1.2  02-May-2000  simonb Use "ntpd.pid" for pid file, change other xntp references to ntp.
 1.1  28-Jan-2000  fair A default NTP configuration file, per PR 4312.
 1.9.36.1  06-Jan-2014  bouyer etc/ntp.conf 1.16, 1.17, 1.18 via patch
external/bsd/ntp/dist/ntpd/ntp_request.c patch

Patch from ntp 4.2.7p404 to prevent an amplifier and DoS attack.
Add several "restrict" lines to the default ntp.conf and
improve comments
[spz, ticket #1895]
 1.9.28.1  06-Jan-2014  bouyer etc/ntp.conf 1.16, 1.17, 1.18 via patch
external/bsd/ntp/dist/ntpd/ntp_request.c patch

Patch from ntp 4.2.7p404 to prevent an amplifier and DoS attack.
Add several "restrict" lines to the default ntp.conf and
improve comments
[spz, ticket #1895]
 1.9.20.1  06-Jan-2014  bouyer etc/ntp.conf 1.16, 1.17, 1.18 via patch
external/bsd/ntp/dist/ntpd/ntp_request.c patch

Patch from ntp 4.2.7p404 to prevent an amplifier and DoS attack.
Add several "restrict" lines to the default ntp.conf and
improve comments
[spz, ticket #1895]
 1.12.2.2  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.12.2.1  17-Apr-2012  yamt sync with head
 1.14.16.1  06-Jan-2014  bouyer etc/ntp.conf 1.16, 1.17, 1.18 via patch
external/bsd/ntp/dist/ntpd/ntp_request.c patch

Patch from ntp 4.2.7p404 to prevent an amplifier and DoS attack.
Add several "restrict" lines to the default ntp.conf and
improve comments
[spz, ticket #1010]
 1.14.8.1  06-Jan-2014  bouyer etc/ntp.conf 1.16, 1.17, 1.18 via patch
external/bsd/ntp/dist/ntpd/ntp_request.c patch

Patch from ntp 4.2.7p404 to prevent an amplifier and DoS attack.
Add several "restrict" lines to the default ntp.conf and
improve comments
[spz, ticket #1010]
 1.14.6.1  19-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.14.2.1  06-Jan-2014  bouyer etc/ntp.conf 1.16, 1.17, 1.18 via patch
external/bsd/ntp/dist/ntpd/ntp_request.c patch

Patch from ntp 4.2.7p404 to prevent an amplifier and DoS attack.
Add several "restrict" lines to the default ntp.conf and
improve comments
[spz, ticket #1010]
 1.19.8.1  20-Mar-2017  pgoyette Sync with HEAD
 1.20.16.1  08-Oct-2020  martin Pull up following revision(s) (requested by kim in ticket #1102):

etc/ntp.conf: revision 1.21
etc/ntp.conf: revision 1.22

Use "pool" for the pool.ntp.org servers. Add some new hints.
- Use the "pool" keyword for obtaining servers from ntp.pool.org.
- Add "tos minclock" and "tos maxclock" to limit the number of servers.
- Add "restrict source" to apply appropriate restrictions to servers.
(Specifically "nopeer" cannot be applied to "pool" servers.)
- A single "pool" entry suffices -- using "2.netbsd.pool.ntp.org" so
that we get both IPv4 and IPv6 addresses. (No addresses are returned
for just "netbsd.pool.ntp.org.")
- Add a comment about "tinker panic 0" -- useful for VMs and laptops.
- Add a comment about "discard minimum" -- useful for some SNTP clients.
- Add an explanation for the "limited" restriction keyword.
- Unify whitespace and comment formatting.

Add iburst to peer and server.
 1.20.6.1  08-Oct-2020  martin Pull up following revision(s) (requested by kim in ticket #1611):

etc/ntp.conf: revision 1.21
etc/ntp.conf: revision 1.22

Use "pool" for the pool.ntp.org servers. Add some new hints.
- Use the "pool" keyword for obtaining servers from ntp.pool.org.
- Add "tos minclock" and "tos maxclock" to limit the number of servers.
- Add "restrict source" to apply appropriate restrictions to servers.
(Specifically "nopeer" cannot be applied to "pool" servers.)
- A single "pool" entry suffices -- using "2.netbsd.pool.ntp.org" so
that we get both IPv4 and IPv6 addresses. (No addresses are returned
for just "netbsd.pool.ntp.org.")
- Add a comment about "tinker panic 0" -- useful for VMs and laptops.
- Add a comment about "discard minimum" -- useful for some SNTP clients.
- Add an explanation for the "limited" restriction keyword.
- Unify whitespace and comment formatting.

Add iburst to peer and server.

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