Hi, We need more information. Do you use pkgs or do you compile? Have you been using a different version before upgrading/installing? If using pkgs, are these official ISC kea packages? Thank you, Razvan
-----Original Message----- From: Diogo <[email protected]> To: Kea <[email protected]> Cc: Diogo <[email protected]> Date: Tuesday, 14 October 2025 4:12 PM EEST Subject: Re: [Kea-users] Dhcp6 crash with config-reload command v2.6.3 Thanks for the link, Darren. My lfc is set to 7200 seconds, and I can consistently repro the issue, so unlikely to be hitting that condition. That said, after I bumped the logs to debug I could see some better messages, which seems related to memfile-lfc: 2025-10-14 06:04:41.596 INFO kea-dhcp6.dhcp6 DHCP6_CONFIG_COMPLETE DHCPv6 server has completed configuration: added IPv6 subnets: 4698; DDNS: disabled 2025-10-14 06:04:42.221 DEBUG kea-dhcp6.dhcpsrv DHCPSRV_CLOSE_DB closing currently open memfile database 2025-10-14 06:04:42.221 DEBUG kea-dhcp6.dhcpsrv DHCPSRV_TIMERMGR_UNREGISTER_TIMER unregistering timer: memfile-lfc 2025-10-14 06:04:42.221 DEBUG kea-dhcp6.dhcpsrv DHCPSRV_MEMFILE_LFC_UNREGISTER_TIMER_FAILED failed to unregister timer 'memfile-lfc': unable to unregister non existing timer 'memfile-lfc' For reference, here’s what the lease section of my config looks like: "lease-database": { "type": "memfile", "name": "/var/lib/kea/kea-dhcp6.csv", "lfc-interval": 7200, "persist": true }, Thanks, Diogo Get Outlook for iOS From: Kea-users <[email protected]> on behalf of Darren Ankney <[email protected]> Sent: Tuesday, October 14, 2025 2:01:36 AM To: Kea user's list <[email protected]> Subject: Re: [Kea-users] Dhcp6 crash with config-reload command v2.6.3 Hi Diogo, That backtrace doesn't look particularly useful because no symbols were found. Kea's logs would probably be far more useful in this case. it would have some message indicating why it is exiting. Here is one example of a problem you could be encountering: https://urldefense.com/v3/__https://gitlab.isc.org/isc-projects/kea/-/issues/3986__;!!Bt8RZUm9aw!5lLpANoHvQQvKiYaNVp_snTIJEP7aIzeFRxARTJkRY0DpyQZ-bOuL5RS6BqpenRvmpHjAJR5IJJDBDxQ$ but without log messages, it is just guessing. Thank you, Darren Ankney On Mon, Oct 13, 2025 at 6:15 PM Diogo André de Assumpção via Kea-users <[email protected]> wrote: > > Hi All, > > I’ve been experiencing an issue with kea-dhcp6 (4 doesn’t seem affected) > where when I issue a config-reload command directly to the dhcp6 socket, the > server crashes. > > > > Looking at the backtrace it seems to be related to the lease management – I’m > using memfile – and maybe some cleanup that is done as part of the reload? > > > > Has anyone experienced something similar? > > > > Note that the config file loads fine when starting the server. > > > > Here’s a backtrace and a few more things from the coredump if it helps: > https://gist.github.com/DiogoAndre/aa8c144329424b431b755711d7a96606 > > > > Thanks, > – Diogo > > > > -- > ISC funds the development of this software with paid support subscriptions. > Contact us at > https://urldefense.com/v3/__https://www.isc.org/contact/__;!!Bt8RZUm9aw!5lLpANoHvQQvKiYaNVp_snTIJEP7aIzeFRxARTJkRY0DpyQZ-bOuL5RS6BqpenRvmpHjAJR5IBEgZWtQ$ > for more information. > > To unsubscribe visit > https://urldefense.com/v3/__https://lists.isc.org/mailman/listinfo/kea-users__;!!Bt8RZUm9aw!5lLpANoHvQQvKiYaNVp_snTIJEP7aIzeFRxARTJkRY0DpyQZ-bOuL5RS6BqpenRvmpHjAJR5IK-1-3Nd$ > . > [email protected] -- ISC funds the development of this software with paid support subscriptions. Contact us at https://urldefense.com/v3/__https://www.isc.org/contact/__;!!Bt8RZUm9aw!5lLpANoHvQQvKiYaNVp_snTIJEP7aIzeFRxARTJkRY0DpyQZ-bOuL5RS6BqpenRvmpHjAJR5IBEgZWtQ$ for more information. To unsubscribe visit https://urldefense.com/v3/__https://lists.isc.org/mailman/listinfo/kea-users__;!!Bt8RZUm9aw!5lLpANoHvQQvKiYaNVp_snTIJEP7aIzeFRxARTJkRY0DpyQZ-bOuL5RS6BqpenRvmpHjAJR5IK-1-3Nd$ . [email protected]
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