Why there is a IP enable and disable by network service

Issues related to configuring your network
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rajibdk
Posts: 1
Joined: 2014/03/11 11:01:27

Why there is a IP enable and disable by network service

Post by rajibdk » 2014/03/11 11:10:39

Dear Team,

I am running CentOS 5.5 in one of my virtual machine server, some time I see some issues with my network service, the IP is enabled and disabled. But I do not have any idea why is that? Please help me with the below log,

Mar 9 04:02:05 localhost syslogd 1.4.1: restart.
Mar 9 13:45:24 localhost auditd[3212]: Audit daemon rotating log files
Mar 9 17:20:31 localhost auditd[3212]: Audit daemon rotating log files
Mar 9 20:55:43 localhost auditd[3212]: Audit daemon rotating log files
Mar 10 00:30:50 localhost auditd[3212]: Audit daemon rotating log files =====> Time shift detected in system
Mar 10 04:06:01 localhost auditd[3212]: Audit daemon rotating log files
Mar 10 07:41:11 localhost auditd[3212]: Audit daemon rotating log files
Mar 10 00:22:33 localhost kernel: dahdi: Detected time shift. =====> Time shift detected in system
Mar 10 00:23:40 localhost avahi-daemon[3726]: Withdrawing address record for 193.23.166.153 on eth0.
Mar 10 00:23:40 localhost avahi-daemon[3726]: Leaving mDNS multicast group on interface eth0.IPv4 with address 193.23.166.153.
Mar 10 00:23:41 localhost nm-system-settings: ifcfg-rh: parsing /etc/sysconfig/network-scripts/ifcfg-eth0:0 ...
Mar 10 00:23:41 localhost avahi-daemon[3726]: iface.c: interface_mdns_mcast_join() called but no local address available.
Mar 10 00:23:41 localhost avahi-daemon[3726]: Interface eth0.IPv4 no longer relevant for mDNS.
Mar 10 00:23:41 localhost avahi-daemon[3726]: Withdrawing address record for fe80::20c:29ff:fe51:40bd on eth0.
Mar 10 00:23:41 localhost avahi-daemon[3726]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fe51:40bd.
Mar 10 00:23:41 localhost avahi-daemon[3726]: iface.c: interface_mdns_mcast_join() called but no local address available.
Mar 10 00:23:41 localhost avahi-daemon[3726]: Interface eth0.IPv6 no longer relevant for mDNS.
Mar 10 00:23:41 localhost avahi-daemon[3726]: Received packet from invalid interface.
Mar 10 00:23:41 localhost last message repeated 2 times
Mar 10 08:23:41 localhost nm-system-settings: ifcfg-rh: error: Missing or invalid IP4 prefix '0' =====> Time shift detected in system
Mar 10 08:23:41 localhost nm-system-settings: ifcfg-rh: parsing /etc/sysconfig/network-scripts/ifcfg-eth0:0 ...
Mar 10 08:23:41 localhost nm-system-settings: ifcfg-rh: error: Missing or invalid IP4 prefix '0'
Mar 10 08:23:41 localhost nm-system-settings: ifcfg-rh: parsing /etc/sysconfig/network-scripts/ifcfg-eth0:0 ...
Mar 10 08:23:41 localhost nm-system-settings: ifcfg-rh: error: Missing or invalid IP4 prefix '0'
Mar 10 00:23:42 localhost kernel: eth0: link up
Mar 10 00:23:43 localhost avahi-daemon[3726]: New relevant interface eth0.IPv6 for mDNS.
Mar 10 00:23:43 localhost avahi-daemon[3726]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fe51:40bd.
Mar 10 00:23:44 localhost avahi-daemon[3726]: Registering new address record for fe80::20c:29ff:fe51:40bd on eth0.
Mar 10 00:23:44 localhost avahi-daemon[3726]: New relevant interface eth0.IPv4 for mDNS.
Mar 10 00:23:44 localhost avahi-daemon[3726]: Joining mDNS multicast group on interface eth0.IPv4 with address 193.23.166.153.
Mar 10 00:23:44 localhost avahi-daemon[3726]: Registering new address record for 193.23.166.153 on eth0.
Mar 10 00:23:44 localhost avahi-daemon[3726]: Registering new address record for 193.23.166.154 on eth0.

Regards
Rajib

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Super Jamie
Posts: 310
Joined: 2014/01/10 23:44:51

Re: Why there is a IP enable and disable by network service

Post by Super Jamie » 2014/03/12 10:32:32

It looks like link flapped on eth0.

avahi-daemon is reporting that it withdrew and joined multicast-DNS on the interface as that interface went down and up again.

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