Arch Linux

mibadt

Member

Registered: 2009-09-25

Posts: 396

Error from ntpd upon IPv6 address receipt/bind

Hi,
Before I get attacked, I've searched, read the Wiki, and modified (what I think) relevant configuration files.

I'm on a fully updated Arch_X86-64/KDE connected (wired) to a router which doesn't support IPV6, and, among others, run ntpd.

Even after the updated configuration (see below) I still get these error messages every 5 minutes:

Sep 04 08:21:48 miki_desk ntpd[342]: bind(22) AF_INET6 fe80::6ef0:49ff:feed:b3eb%3%3#123 flags 0x11 failed: Cannot assign requested address
Sep 04 08:21:48 miki_desk ntpd[342]: unable to create socket on enp6s0 (35) for fe80::6ef0:49ff:feed:b3eb%3#123

Please advise !

Thanks!

-------------relevant modified configurations----------------

[root@miki_desk miki]#  cat /etc/conf.d/ntp-client.conf
NTPD_OPTS='-4'

cat /etc/ntp.conf
# With the default settings below, ntpd will only synchronize your clock.
#
# For details, see:
# - the ntp.conf man page
# - http://support.ntp.org/bin/view/Support/GettingStarted
# - https://wiki.archlinux.org/index.php/Network_Time_Protocol_daemon

# Associate to public NTP pool servers; see http://www.pool.ntp.org/
server 0.pool.ntp.org iburst
server 1.pool.ntp.org iburst
server 2.pool.ntp.org iburst
server 3.pool.ntp.org iburst

# Only allow read-only access from localhost
restrict -4 default noquery nopeer
restrict 127.0.0.1
restrict -4 ::1

# Location of drift file
driftfile /var/lib/ntp/ntp.drift

---

Best regards,
Michael Badt

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,354

Re: Error from ntpd upon IPv6 address receipt/bind

restrict -4 ::1

looks wrong.  So does the first restrict clause.
According to man ntpd.conf, the -4 is only applicable to dns names, not addresses.  OTOG, :: in an address implies an IPv6 address.
Try getting rid of the two '-4' clauses in the restrict lines.
If it makes you feel better, you could put '-4' in front of the the server names in your server statements.

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Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
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mibadt

Member

Registered: 2009-09-25

Posts: 396

Re: Error from ntpd upon IPv6 address receipt/bind

Thanks Ewaller,
But  a reboot after following your advice still yields same errors.

Any Idea?

---current conf file---------------

# cat /etc/ntp.conf 
# With the default settings below, ntpd will only synchronize your clock.
#
# For details, see:
# - the ntp.conf man page
# - http://support.ntp.org/bin/view/Support/GettingStarted
# - https://wiki.archlinux.org/index.php/Network_Time_Protocol_daemon

# Associate to public NTP pool servers; see http://www.pool.ntp.org/
server -4 0.pool.ntp.org iburst
server -4 il.pool.ntp.org iburst
server -4 2.pool.ntp.org iburst
server -4 3.pool.ntp.org iburst

# Only allow read-only access from localhost
restrict default noquery nopeer
restrict 127.0.0.1
restrict  ::1

# Location of drift file
driftfile /var/lib/ntp/ntp.drift

The /etc/conf.d/ntp-client.conf file has been commented out.

---

Best regards,
Michael Badt