Hi Andrew, This is also probably not the solution to these logs, but I notice you also have: "reservation-mode": "out-of-pool", See here: https://kea.readthedocs.io/en/kea-2.4.1/arm/dhcp6-srv.html#fine-tuning-dhcpv6-host-reservation where it explains that this is deprecated: "Since Kea 1.9.1, the reservation-mode parameter is replaced by the reservations-global, reservations-in-subnet and reservations-out-of-pool flags. The flags can be activated independently and can produce various combinations, some of them being unsupported by the deprecated reservation-mode."
Additionally, you may want to move the reservations-global, reservations-in-subnet and reservations-out-of-pool flags to the global area. Their intention is to make allocations happen with less CPU by telling Kea where it might find reservations. So, at least the "reservations-global": false, parameter should be global to prevent kea from wasting time looking there for a reservation. You can, of course, suppress these log messages by setting a specific logger for kea-dhcp6.alloc-engine and setting severity to ERROR which will cause only ERROR and FATAL messages from the kea-dhcp6.alloc-engine logger to be logged see here: https://kb.isc.org/docs/kea-logging-configuration and here: https://kea.readthedocs.io/en/kea-2.4.1/arm/logging.html for further information. Thank you, Darren Ankney On Thu, Jan 4, 2024 at 12:51 PM Andrew Rowson via Kea-users <kea-users@lists.isc.org> wrote: > > My bad - typo in the email. It's correct on the server: > > "subnet": "2001:123:456:e8b0::/64", > "reservations-global": false, > "reservations-in-subnet": true, > "reservations-out-of-pool": true, > "reservations": [ > > On Thu, 4 Jan 2024, at 5:17 PM, Bob Harold wrote: > > On Thu, Jan 4, 2024 at 12:10 PM Andrew Rowson via Kea-users > > <kea-users@lists.isc.org> wrote: > >> Hi, > >> > >> I'm using isc-kea-dhcp6 (2.4.1-isc20231123184533) on Debian bookworm and > >> am having a minor logging issue. I've got a minimal config that defines a > >> single subnet, an allocatable pool within that subnet and a single > >> reservation. > >> > >> The host gets its reserved IP successfully, but there's always a WARN log > >> dance in the kea logs with ALLOC_ENGINE_V6_ALLOC_FAIL_SUBNET, > >> ALLOC_ENGINE_V6_ALLOC_FAIL_NO_POOLS and ALLOC_ENGINE_V6_ALLOC_FAIL_CLASSES. > >> > >> Are these warnings expected, or have I misunderstood something about the > >> configuration? > >> > >> Thanks, > >> Andrew > >> > >> Config: > >> > >> { > >> "Dhcp6": { > >> "interfaces-config": { > >> "interfaces": [ > >> "enp1s0.2", > >> ] > >> }, > >> "lease-database": { > >> "lfc-interval": 1800, > >> "name": "/var/lib/kea/kea-leases6.csv", > >> "type": "memfile" > >> }, > >> "subnet6": [ > >> { > >> "interface": "enp1s0.2", > >> "reservation-mode": "out-of-pool", > >> "pools": [ > >> { > >> "pool": "2001:123:456:e8b0:beef:f00f::/112" > >> } > >> ], > >> "reservations-global": false, > >> "reservations-in-subnet": true, > >> "eservations-out-of-pool": true, > > > > Probably not the solution, but the line above seems to be missing the > > first letter. Is it that way on the server? > > > >> "subnet": "2001:123:456:e8b0::/64", > >> "reservations": [ > >> { > >> "duid": "00:03:00:01:b8:27:eb:bf:db:dd", > >> "hostname": "myhost", > >> "ip-addresses": [ > >> "2001:123:456:e8b0::f" > >> ] > >> } > >> ] > >> } > >> ], > >> "valid-lifetime": 1800 > >> } > >> } > >> > >> Logs: > >> > >> INFO [kea-dhcp6.dhcp6/182198.139733472774592] DHCP6_STARTED Kea DHCPv6 > >> server version 2.4.1 started > >> INFO [kea-dhcp6.leases/182198.139733433005760] DHCP6_LEASE_ADVERT > >> duid=[00:03:00:01:b8:27:eb:bf:db:dd], tid=0x3e9640: lease for address > >> 2001:123:456:e8b0::f and iaid=1746070577 will be advertised > >> WARN [kea-dhcp6.alloc-engine/182198.139733433005760] > >> ALLOC_ENGINE_V6_ALLOC_FAIL_SUBNET duid=[00:03:00:01:b8:27:eb:bf:db:dd], > >> tid=0x3e9640: failed to allocate an IPv6 lease in the subnet > >> 2001:123:456:e8b0::/64, subnet-id 1, shared network (none) > >> WARN [kea-dhcp6.alloc-engine/182198.139733433005760] > >> ALLOC_ENGINE_V6_ALLOC_FAIL_NO_POOLS duid=[00:03:00:01:b8:27:eb:bf:db:dd], > >> tid=0x3e9640: no pools were available for the lease allocation > >> WARN [kea-dhcp6.alloc-engine/182198.139733433005760] > >> ALLOC_ENGINE_V6_ALLOC_FAIL_CLASSES duid=[00:03:00:01:b8:27:eb:bf:db:dd], > >> tid=0x3e9640: Failed to allocate an IPv6 address for client with classes: > >> ALL, KNOWN > >> INFO [kea-dhcp6.leases/182198.139733424613056] DHCP6_LEASE_ALLOC > >> duid=[00:03:00:01:b8:27:eb:bf:db:dd], tid=0x137d91: lease for address > >> 2001:123:456:e8b0::f and iaid=1746070577 has been allocated for 1800 > >> seconds > >> -- > >> > > -- > > Bob Harold > -- > 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 -- 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
