Hi Bret, This could be the same as another issue we are currently investigating. Can you open an issue in our public Gitlab for Kea?
Go to our development repo at https://gitlab.isc.org/isc-projects/kea and click on issues, and create a new issue. Please mark it as confidential, since it is a crash. Then you will receive updates to the ticket as we investigate. Thank you! Vicky Risk > On Aug 7, 2025, at 12:11 PM, Giddings, Bret via Kea-users > <kea-users@lists.isc.org> wrote: > > Hi, > > I’m trying to move our environment from 2.6 to 3.0 so have setup one subnet > to be served by the new version. This appears to work w.r.t. issuing leases > for the subnet in question. However, it also crashes (seemingly randomly) with > > kea-dhcp4: /usr/include/boost/smart_ptr/shared_ptr.hpp:728: typename > boost::detail::sp_member_access<T>::type boost::shared_ptr<T>::operator->() > const [with T = const isc::dhcp::Subnet4; typename > boost::detail::sp_member_access<T>::type = const isc::dhcp::Subnet4*]: > Assertion `px != 0' failed. > > The environment is > > Debian 12.11 > Using Cloudsmith images: > # dpkg -l | grep kea > ii isc-kea-common 3.0.0-isc20250717111736 amd64 Common libraries > for the ISC Kea DHCP server > ii isc-kea-dhcp-ddns 3.0.0-isc20250717111736 amd64 ISC Kea DHCP > Dynamic DNS service > ii isc-kea-dhcp4 3.0.0-isc20250717111736 amd64 ISC Kea IPv4 DHCP > server > ii isc-kea-hooks 3.0.0-isc20250717111736 amd64 Hook libraries > for ISC Kea DHCP server > > Is this a known issue and if not, what additional information is required to > debug it. > > Relevant Kea config which is pretty much identical to 2.6 config with > exception of control-sockets is > > { > "Dhcp4": { > "interfaces-config": { > "interfaces": [ > "eth0" > ], > "dhcp-socket-type": "udp", > "service-sockets-require-all": true, > "service-sockets-max-retries": 100, > "service-sockets-retry-wait-time": 5000 > }, > "control-sockets": [ > { > "socket-type": "http", > "socket-port": 8000 > } > ], > "multi-threading": { > "enable-multi-threading": true, > "thread-pool-size": 2, > "packet-queue-size": 64 > }, > "lease-database": { > "type": "memfile", > "lfc-interval": 1500 > }, > "valid-lifetime": 43200, > "expired-leases-processing": { > "reclaim-timer-wait-time": 3600, > "hold-reclaimed-time": 172800, > "max-reclaim-leases": 0, > "max-reclaim-time": 0 > }, > "hooks-libraries": [ > { > "library": "/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_lease_cmds.so" > }, > { > "library": > "/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_flex_option.so", > "parameters": { > "options": [ > { > "code": 61, > "remove": "member('dhcp-3') or pkt4.giaddr == 10.246.127.253" > } > ] > } > } > ], > "dhcp-ddns": { > // Connectivity parameters > "enable-updates": true, > "server-ip": "127.0.0.1", > "server-port": 53001, > "sender-ip": "", > "sender-port": 0, > "max-queue-size": 1024, > "ncr-protocol": "UDP", > "ncr-format": "JSON" > }, > // Behavioral parameters (global) > "ddns-send-updates": true, > "ddns-override-no-update": false, > "ddns-override-client-update": true, > "ddns-replace-client-name": "always", > "ddns-generated-prefix": "host", > "ddns-qualifying-suffix": “example.com", > "ddns-update-on-renew": true, > "hostname-char-set": "", > "hostname-char-replacement": "", > "reservations-global": true, > "reservations-in-subnet": true, > "authoritative": true, > "ip-reservations-unique": false, > "match-client-id": false, > > "client-classes": [ > {"name": "dhcp-2”}, > {"name": "dhcp-42"} > ], > "reservations": [ > { "hostname": "foobar", "hw-address": "00:0a:9f:22:c7:b0", > "client-classes": ["dhcp-2"] }, > // 20000+ additional reservations of various client-class types not shown > ], > "subnet4": [ > { > "id": 503, > "subnet": "10.245.34.128/26", > "option-data": [ > { "name": "routers" , "data": "10.245.34.190" > }, > { "name": "domain-name-servers" , "data": > "10.245.94.204,10.245.48.89,10.245.252.201" }, > { "name": "domain-name" , "data": "example.com" > }, > { "name": "netbios-name-servers", "data": "10.245.42.23,10.245.48.35" > } > ], > "valid-lifetime": 28800, > "pools": [{"pool-id": 10503042, "client-class": "dhcp-42", "pool": > "10.245.34.129 - 10.245.34.185"}], > ] > } > ] } > } > -- > ISC funds the development of this software with paid support subscriptions. > Contact us at https://www.isc.org/contact/ for more information. > > To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. > > Kea-users mailing list > Kea-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/kea-users
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