Good day.
I have Kea 2.6.1 installed. I use v4 and v6 dhcp server. V4 works fine but v6
does not give clients IPv6 addresses. The setup is:
HW router with ipv6 enabled, RA enabled, M flag present. I do not use O flag
because in the dualstack dns servers are on v4 addresses. So I just want to
distribute ipv6 addresses from dhcp server to clients. I use hw-address to
distribute addresses but I tried DUID as well.
I can see in the Kea logs this output:
2024-08-18 10:44:32.959 INFO [kea-dhcp6.dhcp6/3542.140690709083840]
DHCP6_QUERY_LABEL received query:
duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948
2024-08-18 10:44:32.959 INFO [kea-dhcp6.packets/3542.140690709083840]
DHCP6_PACKET_RECEIVED duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no
hwaddr info], tid=0xbea948: SOLICIT (type 1) received from
fe80::54a0:da31:647a:debc to ff02::1:2 on interface ens3
2024-08-18 10:44:32.959 INFO [kea-dhcp6.packets/3542.140690709083840]
DHCP6_PACKET_SEND duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr
info], tid=0xbea948: trying to send packet ADVERTISE (type 2) from
[ff02::1:2]:547 to [fe80::54a0:da31:647a:debc]:546 on interface ens3
2024-08-18 10:44:33.957 INFO [kea-dhcp6.dhcp6/3542.140690717476544]
DHCP6_QUERY_LABEL received query:
duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948
2024-08-18 10:44:33.958 INFO [kea-dhcp6.packets/3542.140690717476544]
DHCP6_PACKET_RECEIVED duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no
hwaddr info], tid=0xbea948: SOLICIT (type 1) received from
fe80::54a0:da31:647a:debc to ff02::1:2 on interface ens3
2024-08-18 10:44:33.958 INFO [kea-dhcp6.packets/3542.140690717476544]
DHCP6_PACKET_SEND duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr
info], tid=0xbea948: trying to send packet ADVERTISE (type 2) from
[ff02::1:2]:547 to [fe80::54a0:da31:647a:debc]:546 on interface ens3
2024-08-18 10:44:33.959 INFO [kea-dhcp6.dhcp6/3542.140690709083840]
DHCP6_QUERY_LABEL received query:
duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948
2024-08-18 10:44:33.959 INFO [kea-dhcp6.packets/3542.140690709083840]
DHCP6_PACKET_RECEIVED duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no
hwaddr info], tid=0xbea948: SOLICIT (type 1) received from
fe80::54a0:da31:647a:debc to ff02::1:2 on interface ens3
2024-08-18 10:44:33.960 INFO [kea-dhcp6.packets/3542.140690709083840]
DHCP6_PACKET_SEND duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr
info], tid=0xbea948: trying to send packet ADVERTISE (type 2) from
[ff02::1:2]:547 to [fe80::54a0:da31:647a:de
I’ve used the old ISC dhcp server but I want to migrace to Kea because the old
ISC dhcp server is obsolette.
Configuration file looks like this (it is truncated because there are more than
200 records):
{
# /etc/dhcpd6.conf
#
# Sample DHCPv6 configuration file for ISC dhcpd
#
# *** PLEASE CONFIGURE IT FIRST ***
#
# Don't forget to set the DHCPD6_INTERFACE in the
# /etc/sysconfig/dhcpd file.
#
/// This configuration declares some subnets but has no interfaces-config
/// Reference Kea #245
"Dhcp6": {
"control-socket": {
"socket-type": "unix",
"socket-name": "/tmp/kea6-ctrl-socket"
},
"mac-sources": [
"any"
],
"loggers": [
{
"name": "kea-dhcp6",
"severity": "DEBUG",
"output_options": [
{
"output": "/var/log/kea/dhcp6.log",
"maxver": 10
}
]
},
{
"name": "kea-dhcp6.dhcpsrv",
"severity": "DEBUG",
"output_options": [
{
"output": "/var/log/kea/dhcp6-dhcpsrv.log",
"maxver": 10
}
]
},
{
"name": "kea-dhcp6.leases",
"severity": "DEBUG",
"output_options": [
{
"output": "/var/log/kea/dhcp6-leases.log",
"maxver": 10
}
]
}
],
"interfaces-config": {
"interfaces": [ "ens3" ]
},
"subnet6": [
{
"id": 1,
"subnet": „2001:XXX:XXX:0::/64",
"reservations": [
{
"hostname": „XXX",
"hw-address": "08:8f:c3:f5:ab:49",
"ip-addresses": [
„2001:XXX:XXX:0:192:168:1:75"
]
},
{
"hostname": „AAAAA",
"hw-address": "08:97:98:d7:c5:d0",
"ip-addresses": [
„2001:XXX:XXX:0:192:168:0:169"
]
}
]
}
]
}
}
Thank you for your help. I’ve spent more than 10 hours debugging this problem,
but still no luck.
Jan
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