Fix grammar in comment (affect vs. effect)

Add iburst to peer and server.

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.

branches: 1.20.6; 1.20.16;
"kod" needs limited.

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.

Another comment change, missed in previous commit.

Attempt to improve comments about how to choose servers,
and about what "tos minsane" does.

Add several "restrict" lines to the default ntp.conf, with comments.

put a comment for mode7

branches: 1.14.2; 1.14.6; 1.14.8; 1.14.16;
use the join URL.

Instead of using the general servers, use the ones allocated specifically
for the NetBSD project.

branches: 1.12.2;
Restore "duplicate" entries, but use 0. and 1. names to ensure that
same hosts aren't used by both entries.

Remove duplicate (but commented out) entries.

default mdnstries to 0; most people don't use mdns, so this prevents spurious
warnings.

branches: 1.9.20; 1.9.28; 1.9.36;
Fix typo/mispelling in comment.

Add a synopsis, disclaimer, and a hypertext link to the "real" documentation.

Whitespace and punctuation cleanup. Try to fill lines up to 72 columns.

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).

Add a "tos" directive.

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

whitespace police

Use "ntpd.pid" for pid file, change other xntp references to ntp.

A default NTP configuration file, per PR 4312.

Add iburst to peer and server.

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.

"kod" needs limited.

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.

Another comment change, missed in previous commit.

Attempt to improve comments about how to choose servers,
and about what "tos minsane" does.

Add several "restrict" lines to the default ntp.conf, with comments.

put a comment for mode7

branches: 1.14.2; 1.14.6; 1.14.8; 1.14.16;
use the join URL.

Instead of using the general servers, use the ones allocated specifically
for the NetBSD project.

branches: 1.12.2;
Restore "duplicate" entries, but use 0. and 1. names to ensure that
same hosts aren't used by both entries.

Remove duplicate (but commented out) entries.

default mdnstries to 0; most people don't use mdns, so this prevents spurious
warnings.

branches: 1.9.20; 1.9.28; 1.9.36;
Fix typo/mispelling in comment.

Add a synopsis, disclaimer, and a hypertext link to the "real" documentation.

Whitespace and punctuation cleanup. Try to fill lines up to 72 columns.

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).

Add a "tos" directive.

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

whitespace police

Use "ntpd.pid" for pid file, change other xntp references to ntp.

A default NTP configuration file, per PR 4312.

"kod" needs limited.

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.

Another comment change, missed in previous commit.

Attempt to improve comments about how to choose servers,
and about what "tos minsane" does.

Add several "restrict" lines to the default ntp.conf, with comments.

put a comment for mode7

branches: 1.14.2; 1.14.6; 1.14.8; 1.14.16;
use the join URL.

Instead of using the general servers, use the ones allocated specifically
for the NetBSD project.

branches: 1.12.2;
Restore "duplicate" entries, but use 0. and 1. names to ensure that
same hosts aren't used by both entries.

Remove duplicate (but commented out) entries.

default mdnstries to 0; most people don't use mdns, so this prevents spurious
warnings.

branches: 1.9.20; 1.9.28; 1.9.36;
Fix typo/mispelling in comment.

Add a synopsis, disclaimer, and a hypertext link to the "real" documentation.

Whitespace and punctuation cleanup. Try to fill lines up to 72 columns.

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).

Add a "tos" directive.

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

whitespace police

Use "ntpd.pid" for pid file, change other xntp references to ntp.

A default NTP configuration file, per PR 4312.

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.

Another comment change, missed in previous commit.

Attempt to improve comments about how to choose servers,
and about what "tos minsane" does.

Add several "restrict" lines to the default ntp.conf, with comments.

put a comment for mode7

branches: 1.14.2; 1.14.6; 1.14.8; 1.14.16;
use the join URL.

Instead of using the general servers, use the ones allocated specifically
for the NetBSD project.

branches: 1.12.2;
Restore "duplicate" entries, but use 0. and 1. names to ensure that
same hosts aren't used by both entries.

Remove duplicate (but commented out) entries.

default mdnstries to 0; most people don't use mdns, so this prevents spurious
warnings.

branches: 1.9.20; 1.9.28; 1.9.36;
Fix typo/mispelling in comment.

Add a synopsis, disclaimer, and a hypertext link to the "real" documentation.

Whitespace and punctuation cleanup. Try to fill lines up to 72 columns.

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).

Add a "tos" directive.

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

whitespace police

Use "ntpd.pid" for pid file, change other xntp references to ntp.

A default NTP configuration file, per PR 4312.

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]

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]

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]

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")

sync with head

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]

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]

Rebase to HEAD as of a few days ago.

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]