I've got this in my config file for the DHCPv4 server (using Kea 2.4.0:
"Dhcp4": {
"authoritative": true,
"valid-lifetime": 86400,
"reservations-global": false,
"reservations-in-subnet": true,
"reservations-out-of-pool": true,
"ip-reservations-unique": false,
...
"subnet4": [
{
"id": 88,
"subnet": "192.168.88.0/24",
"pools": [
{
"pool": "192.168.88.64/26"
},
{
"pool": "192.168.88.128/26"
}
],
"reservations": [
{
"hw-address": "90:2e:16:d6:a4:1e",
"ip-address": "192.168.88.192",
"hostname": "balrog22",
"user-context": {
"name": "balrog22"
}
},
{
"hw-address": "a8:64:f1:30:88:0b",
"ip-address": "192.168.88.192",
"hostname": "balrog22",
"user-context": {
"name": "balrog22"
}
},
...
In theory this should result in my laptop getting the same IPv4 address whether
it is connected to the wired or wireless networks (which are the same
VLAN/subnet).
However, I see this in the log:
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: WARN
ALLOC_ENGINE_V4_DISCOVER_ADDRESS_CONFLICT [hwtype=1 90:2e:16:d6:a4:1e],
cid=[00:81:74:fa:e6:94:98:99:8d:79:c0:a3:9c:87:27:72], tid=0x262eb546:
conflicting reservation for address 192.168.88.192 with existing lease Address:
192.168.88.192
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: Valid life: 86400
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: Cltt: 1697977751
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: Hardware addr: a8:64:f1:30:88:0b
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: Client id: 01:a8:64:f1:30:88:0b
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: Subnet ID: 88
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: Pool ID: 0
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: State: default
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: Relay ID: (none)
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: Remote ID: (none)
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: INFO DHCP4_LEASE_ADVERT [hwtype=1
90:2e:16:d6:a4:1e], cid=[00:81:74:fa:e6:94:98:99:8d:79:c0:a3:9c:87:27:72],
tid=0x262eb546: lease 192.168.88.64 will be advertised
Oct 22 08:29:55 core23-a kea-dhcp4[1650]: INFO DHCP4_LEASE_ALLOC [hwtype=1
90:2e:16:d6:a4:1e], cid=[00:81:74:fa:e6:94:98:99:8d:79:c0:a3:9c:87:27:72],
tid=0x262eb546: lease 192.168.88.64 has been allocated for 86400 seconds
I'm running in the default multithreaded mode, so 'reservations-lookup-first'
should be enabled (its default).
I must be missing something, as I believe I'm doing exactly what the ARM says I
should do to have multiple reservations for the same IP address, but it's not
working.
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