IPv6 Addresssing Lost - radvd exited for unknown reason



  • 2.2-BETA (amd64)
    built on Fri Oct 10

    Uptime was around 4 days, 8 hours.

    For no apparent reason radvd terminated and IPv6 DHCP-PD addressing was lost.

    There was no interface reset or Cable Modem reset or loss of signal on DOCSIS side.

    I have Gateway Monitoring (apinger) disabled for IPv4 and IPv6.  I have run that way on 2.1.x for several months, due to the loss of IPv6 addressing if there is even a short gateway event.

    I assume radvd restarted because it is a service monitored by Service Watchdog.  But that seems kind of pointless since restarting it does not bring back the lost IPv6 addressing.  A WAN interface release/renew did not help, ended up rebooting.

    The logs are below.  No other system or external event at the time radvd exited.

    Oct 14 21:13:07 radvd[38204]: resuming normal operation
    Oct 14 21:13:07 radvd[38204]: attempting to reread config file
    Oct 14 21:13:04 radvd[38204]: resuming normal operation
    Oct 14 21:13:04 radvd[38204]: attempting to reread config file
    Oct 14 21:13:03 radvd[37564]: IPv6 forwarding seems to be disabled, but continuing anyway.
    Oct 14 21:13:03 radvd[37564]: IPv6 forwarding setting is: 0, should be 1
    Oct 14 21:13:03 radvd[37564]: version 1.9.1 started
    Oct 14 21:09:00 radvd[45856]: no auto-selected prefix on interface igb1, disabling advertisements
    Oct 14 21:09:00 radvd[45856]: no auto-selected prefix on interface igb0, disabling advertisements
    Oct 14 21:09:00 radvd[45856]: version 1.9.1 started
    Oct 14 21:08:13 radvd[761]: removing /var/run/radvd.pid
    Oct 14 21:08:13 radvd[761]: sending stop adverts
    Oct 14 21:08:13 radvd[761]: Exiting, sigterm or sigint received.

    –- Logs from Splunk for same time period ---

    Oct 14 21:09:00 php: servicewatchdog_cron.php: Service Watchdog detected service radvd stopped. Restarting radvd (Router Advertisement Daemon)
    Oct 14 21:08:21 devd: notify_clients: send() failed; dropping unresponsive client
    Oct 14 21:08:21 php-fpm[22452]: /rc.newwanip: Creating rrd update script
    Oct 14 21:08:18 apinger: No usable targets found, exiting
    Oct 14 21:08:18 apinger: Starting Alarm Pinger, apinger(51282)
    Oct 14 21:08:17 php-fpm[22452]: /rc.newwanip: ROUTING: setting IPv6 default route to fe80::201:5cff:fe24:9301%igb3
    Oct 14 21:08:17 php-fpm[22452]: /rc.newwanip: ROUTING: setting default route to 76.100.xxx.xxx
    Oct 14 21:08:17 php-fpm[22452]: /rc.newwanip: rc.newwanip: on (IP address: 76.100.xxx.xxx) (interface: WAN[wan]) (real interface: igb3).
    Oct 14 21:08:17 php-fpm[22452]: /rc.newwanip: rc.newwanip: Informational is starting igb3.
    Oct 14 21:08:16 rtsold: Starting dhcp6 client for interface wan(igb3)
    Oct 14 21:08:16 php-fpm[22452]: /status_interfaces.php: Accept router advertisements on interface igb3
    Oct 14 21:08:16 check_reload_status: rc.newwanip starting igb3
    Oct 14 21:08:13 php-fpm[99451]: /status_interfaces.php: Clearing states to old gateway 76.100.xxx.xxx.
    Oct 14 21:08:13 php-fpm[99451]: /status_interfaces.php: Shutting down Router Advertisment daemon cleanly

    Edit: Additional logs added.



  • Additional logs added to original post.


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