Changes between Version 11 and Version 12 of TipAndDoc/network/ntp

Timestamp:

Mar 28, 2011 6:45:14 PM (15 years ago)

Author:

mitty

Comment:

--

TipAndDoc/network/ntp

@@ -11 +11 @@
 
  * /etc/ntp.conf
+
+ == IPv6 ==
+ === fource IPv4 ===
+ 1. /etc/default/ntp (Ubuntu)
+{{{
+NTPD_OPTS='-g -4'
+}}}
+  * ntpq -pでpeerに接続出来なくなる
+  * $ ntpq -p
+{{{
+localhost: timed out, nothing received
+***Request timed out
+}}}
+  * ntpq -p4 とすることで回避出来る
+{{{
+     remote           refid      st t when poll reach   delay   offset  jitter
+==============================================================================
+ ntp-b3.nict.go. .NICT.           1 u   29   64    3   11.385   -0.560   0.497
+ ntp-b2.nict.go. .NICT.           1 u   26   64    3    8.957   -0.115   0.567
+ ntp-a3.nict.go. .NICT.           1 u   30   64    3    8.522   -0.643   0.521
+ ntp-a2.nict.go. .NICT.           1 u   28   64    3    7.413   -0.117   0.603
+ ntp2.jst.mfeed. 210.173.160.86   2 u   27   64    3   18.359    0.371   1.393
+ phoenix-gw.netl 210.173.160.27   3 u   26   64    3   12.690    1.117   0.165
+ LOCAL(0)        .LOCL.           5 l   24   64    3    0.000    0.000   0.001
+}}}
+ 1. 「server -4 ntp.nict.jp」とする
+  * $ grep '\-4' /etc/ntp.conf
+{{{
+server -4 ntp.nict.jp                 # NICT => 133.243.238.163
+server -4 ntp.nict.jp                 # NICT => 133.243.238.164
+server -4 ntp.nict.jp                 # NICT => 133.243.238.243
+server -4 ntp.nict.jp                 # NICT => 133.243.238.244
+}}}
+  * [http://slashdot.jp/it/comments.pl?sid=320170&cid=958763&threshold=-1 コメント: NTPによる日本標準時配信開始 - スラッシュドット・ジャパン]
+  * $ ntpd --help | grep IP
+{{{
+   -4 no  ipv4           Force IPv4 DNS name resolution
+   -6 no  ipv6           Force IPv6 DNS name resolution
+   -L no  novirtualips   Do not listen to virtual IPs
+}}}
 
  == refer local clock ==