Arch Linux

Carlwill

Member

From: Orlando, FL

Registered: 2008-10-06

Posts: 560

Website

NTP Log Errors

So I just installed NTP on my server and verified everything is working as expected and please keep in mind I am very green w/ systemd:

[root@ion101 ~]# systemctl status ntpd.service
● ntpd.service - Network Time Service
   Loaded: loaded (/usr/lib/systemd/system/ntpd.service; enabled)
   Active: active (running) since Fri 2014-10-24 18:36:04 UTC; 7min ago
  Process: 196 ExecStart=/usr/bin/ntpd -g -u ntp:ntp (code=exited, status=0/SUCCESS)
 Main PID: 203 (ntpd)
   CGroup: /system.slice/ntpd.service
           └─203 /usr/bin/ntpd -g -u ntp:ntp

Oct 24 18:36:04 ion101.orl.voxeo.net ntpd[203]: bind(21) AF_INET6 fe80::2000:bff:fe5e:878e%2%2#123 flags 0x11 failed: Cannot assign requested address
Oct 24 18:36:04 ion101.orl.voxeo.net ntpd[203]: unable to create socket on eth0 (5) for fe80::2000:bff:fe5e:878e%2#123
Oct 24 18:36:04 ion101.orl.voxeo.net ntpd[203]: failed to init interface for address fe80::2000:bff:fe5e:878e%2
Oct 24 18:36:04 ion101.orl.voxeo.net ntpd[203]: Listening on routing socket on fd #21 for interface updates
Oct 24 18:36:04 ion101.orl.voxeo.net systemd[1]: Started Network Time Service.
Oct 24 18:36:05 ion101.orl.voxeo.net ntpd[203]: bind(24) AF_INET6 fe80::2000:bff:fe5e:878e%2%2#123 flags 0x11 failed: Cannot assign requested address
Oct 24 18:36:05 ion101.orl.voxeo.net ntpd[203]: unable to create socket on eth0 (6) for fe80::2000:bff:fe5e:878e%2#123
Oct 24 18:36:05 ion101.orl.voxeo.net ntpd[203]: failed to init interface for address fe80::2000:bff:fe5e:878e%2
Oct 24 18:36:08 ion101.orl.voxeo.net ntpd[203]: Listen normally on 7 eth0 [fe80::2000:bff:fe5e:878e%2]:123
Oct 24 18:36:08 ion101.orl.voxeo.net ntpd[203]: new interface(s) found: waking up resolver

I don't USE or WANT IPv6 on my Arch Linux server so I verified the service is disabled:

[root@ion101 ~]# systemctl status ip6tables.service
● ip6tables.service - IPv6 Packet Filtering Framework
   Loaded: loaded (/usr/lib/systemd/system/ip6tables.service; disabled)
   Active: inactive (dead)

Can someone please help me understand the logs above and what that means? Is this normal or should I make a config change to tell my NTP daemon config to only use the IPv4 Interface?

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branch

Member

Registered: 2014-03-16

Posts: 209

Re: NTP Log Errors

ip6tables is just the IPv6 firewall. If you want to disable IPv6 see https://wiki.archlinux.org/index.php/IPv6#Disable_IPv6

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,354

Re: NTP Log Errors

You might also look at your /etc/ntp.conf and ensure it is not trying to use IPv6.  It looks like it is.

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