NetBSD Problem Report #28954
From kim@tac.nyc.ny.us Thu Jan 13 16:37:18 2005
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Date: Thu, 13 Jan 2005 11:37:00 -0500 (EST)
From: kim@tac.nyc.ny.us (Kimmo Suominen)
To: gnats-bugs@netbsd.org
Subject: ntpq does not fall back to IPv4
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>Number: 28954
>Category: bin
>Synopsis: ntpq does not fall back to IPv4
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: bin-bug-people
>State: closed
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Thu Jan 13 16:39:06 +0000 2005
>Closed-Date: Wed Nov 04 21:48:59 +0000 2020
>Last-Modified: Wed Nov 04 21:48:59 +0000 2020
>Originator: Kimmo Suominen
>Release: NetBSD 2.99.11 2004-12-15
>Organization:
<A HREF="http://kimmo.suominen.com/">Kimmo Suominen</A>
>Environment:
System: NetBSD beowulf.gw.com 2.99.11 NetBSD 2.99.11 (GW-GENERIC) #85: Sat Jan 1 11:30:14 EST 2005 kim@hrothgar.gw.com:/usr/src/sys/arch/i386/compile/GW-GENERIC i386
Architecture: i386
Machine: i386
>Description:
When connecting to a host with both IPv6 and IPv4 addresses, ntpq
will not try IPv4 if the IPv6 connection fails.
>How-To-Repeat:
I'm running xnptd v3 on some machines. It only listens on IPv4.
Connections to localhost fail with "Connection refused".
beowulf:~> ntpq -p
ntpq: read: Connection refused
beowulf:~> ntpq -p 127.0.0.1
remote refid [... truncated ...]
beowulf:~> grep localhost /etc/hosts
::1 localhost
127.0.0.1 localhost
Connections to grendel.gw.com fail with "No route to host" (as
beowulf does not have a global IPv6 address or IPv6 routes).
beowulf:~> ntpq -p grendel.gw.com
ntpq: connect: No route to host
Exit 1
beowulf:~> host grendel.gw.com
grendel.gw.com has address 204.80.150.1
grendel.gw.com has IPv6 address 2001:240:584:1::1
grendel.gw.com mail is handled by 0 grendel.gw.com.
grendel.gw.com mail is handled by 50 relay.gw.com.
beowulf:~> ntpq -p 204.80.150.1
remote refid [... truncated ...]
Normally applications should try IPv4 if IPv6 fails:
beowulf:~> telnet grendel.gw.com
Trying 2001:240:584:1::1...
telnet: connect to address 2001:240:584:1::1: No route to host
Trying 204.80.150.1...
Connected to grendel.gw.com.
>Fix:
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed
State-Changed-By: kim@NetBSD.org
State-Changed-When: Wed, 04 Nov 2020 21:48:59 +0000
State-Changed-Why:
Timed out for fix. Everything is running NTP v4 anyway.
>Unformatted:
(Contact us)
$NetBSD: gnats-precook-prs,v 1.4 2018/12/21 14:20:20 maya Exp $
$NetBSD: gnats_config.sh,v 1.9 2014/08/02 14:16:04 spz Exp $
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