Hey there,
we are experiencing some issues on some of our devices regarding the
domainpart. It's doubled or tripled (like device.example.org.example.org or
device.example.org.example.org.example.org) which is not just annoying but also
relevant to the dns.
The main part of the network is Microsoft-based (AD, AD-DNS, Authentication,
...).
Can anybody tell me, where the problem is?
The interesting part of the configuration looks like the following:
--kea-dhcp4.conf start--
"Dhcp4": {
"dhcp-ddns": {
"enabled-updates": true,
"qualifying-suffix": , "example.com."
"replace-client-name": "never",
"generated-prefix": "noname"
},
"option-data": [
{
"code": 15,
"name": "domain-name",
"data": "example.com"
},
{
"name": "domain-search",
"data": "example.com"
}
]
...
--kea-dhcp4.conf end-
In the logs we see the following (1 example, DEBUG 99):
DEBUG [kea-dhcp4.packets] DHCP4_PACKET_RECEIVED [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: DHCPDISCOVER (type 1) received from
10.36.9.97 to 192.168.100.114 on interface ens192
DEBUG [kea-dhcp4.packets] DHCP4_QUERY_DATA [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003, packet details:
local_address=192.168.100.114:67, remote_address=10.36.9.97:67,
msg_type=DHCPDISCOVER (1), transid=0xf2110003,#012options:#012 type=012,
len=010: "printerdevice" (string)#012 type=050, len=004: 10.36.9.104
(ipv4-address)#012 type=051, len=004: 4294967295 (uint32)#012 type=053,
len=001: 1 (uint8)#012 type=055, len=014: 1(uint8) 3(uint8) 42(uint8) 4(uint8)
6(uint8) 12(uint8) 15(uint8) 26(uint8) 44(uint8) 51(uint8) 54(uint8) 58(uint8)
59(uint8) 190(uint8)#012 type=060, len=058:
"Mfg=LEXMARK;Typ=MFP;Mod=Lexmark MX310dn;Ser=<serialnr>;"
(string)#012 type=061, len=007: 01:00:21:b7:f3:d8:20
DEBUG [kea-dhcp4.packets] DHCP4_SUBNET_SELECTED [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: the subnet with ID 4376 was
selected for client assignments
DEBUG [kea-dhcp4.packets] DHCP4_SUBNET_DATA [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: the selected subnet details:
10.36.9.96/27
DEBUG [kea-dhcp4.dhcp4] DHCP4_CLASS_ASSIGNED [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: client packet has been assigned to
the following class(es): VENDOR_CLASS_Mfg=LEXMARK;Typ=MFP;Mod=Lexmark
MX310dn;Ser=<serialnr>;
DEBUG [kea-dhcp4.ddns] DHCP4_CLIENT_HOSTNAME_PROCESS [hwtype=1
00:21:b7:f3:d8:20], cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: processing
client's Hostname option
DEBUG [kea-dhcp4.ddns] DHCP4_CLIENT_HOSTNAME_DATA [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: client sent Hostname option:
printerdevice
DEBUG [kea-dhcp4.ddns] DHCP4_CLIENT_HOSTNAME_DATA [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: client sent Hostname option:
printerdevice
DEBUG [kea-dhcp4.ddns] DHCP4_RESPONSE_HOSTNAME_DATA [hwtype=1
00:21:b7:f3:d8:20], cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: including
Hostname option in the server's response: printerdevice.example.org
DEBUG [kea-dhcp4.alloc-engine] ALLOC_ENGINE_V4_OFFER_EXISTING_LEASE allocation
engine will try to offer existing lease to the client [hwtype=1
00:21:b7:f3:d8:20], cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003
INFO [kea-dhcp4.leases] DHCP4_LEASE_ADVERT [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: lease 10.36.9.104 will be advertised
DEBUG [kea-dhcp4.options] DHCP4_PACKET_PACK [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: preparing on-wire format of the
packet to be sent
DEBUG [kea-dhcp4.packets] DHCP4_PACKET_SEND [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: trying to send packet DHCPOFFER
(type 2) from 192.168.100.114:67 to 10.36.9.97:67 on interface ens192
DEBUG [kea-dhcp4.packets] DHCP4_RESPONSE_DATA [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: responding with packet DHCPOFFER
(type 2), packet details: local_address=192.168.100.114:67,
remote_address=10.36.9.97:67, msg_type=DHCPOFFER (2),
transid=0xf2110003,#012options:#012 type=001, len=004: 4294967264 (uint32)#012
type=003, len=004: 10.36.9.97#012 type=006, len=008: 192.168.100.15
192.168.100.14#012 type=012, len=020: "printerdevice.example.com"
(string)#012 type=042, len=008: 192.168.100.15 192.168.100.14#012 type=044,
len=004: 192.168.100.15#012 type=051, len=004: 1209600 (uint32)#012 type=053,
len=001: 2 (uint8)#012 type=054, len=004: 192.168.100.114#012 type=058,
len=004: 604800 (uint32)#012 type=059, len=004: 604800 (uint32)#012 type=061,
len=007: 01:00:21:b7:f3:d8:20
DEBUG [kea-dhcp4.packets] DHCP4_PACKET_RECEIVED [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: DHCPREQUEST (type 3) received from
10.36.9.97 to 192.168.100.114 on interface ens192
DEBUG [kea-dhcp4.packets] DHCP4_QUERY_DATA [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003, packet details:
local_address=192.168.100.114:67, remote_address=10.36.9.97:67,
msg_type=DHCPREQUEST (3), transid=0xf2110003,#012options:#012 type=012,
len=020: "printerdevice.example.com" (string)#012 type=050, len=004:
10.36.9.104 (ipv4-address)#012 type=053, len=001: 3 (uint8)#012 type=054,
len=004: 192.168.100.114 (ipv4-address)#012 type=055, len=014: 1(uint8)
3(uint8) 42(uint8) 4(uint8) 6(uint8) 12(uint8) 15(uint8) 26(uint8) 44(uint8)
51(uint8) 54(uint8) 58(uint8) 59(uint8) 190(uint8)#012 type=060, len=058:
"Mfg=LEXMARK;Typ=MFP;Mod=Lexmark MX310dn;Ser=<serialnr>;"
(string)#012 type=061, len=007: 01:00:21:b7:f3:d8:20#012 type=81
(CLIENT_FQDN), flags: (N=0, E=0, O=0, S=0),
domain-name='printerdevice.example.com.example.com' (partial)
DEBUG [kea-dhcp4.packets] DHCP4_SUBNET_SELECTED [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: the subnet with ID 4376 was
selected for client assignments
DEBUG [kea-dhcp4.packets] DHCP4_SUBNET_DATA [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: the selected subnet details:
10.36.9.96/27
DEBUG [kea-dhcp4.dhcp4] DHCP4_CLASS_ASSIGNED [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: client packet has been assigned to
the following class(es): VENDOR_CLASS_Mfg=LEXMARK;Typ=MFP;Mod=Lexmark
MX310dn;Ser=<serialnr>;
DEBUG [kea-dhcp4.ddns] DHCP4_CLIENT_FQDN_PROCESS [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: processing Client FQDN option
DEBUG [kea-dhcp4.ddns] DHCP4_CLIENT_FQDN_DATA [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: Client sent FQDN option: type=81
(CLIENT_FQDN), flags: (N=0, E=0, O=0, S=0),
domain-name='printerdevice.example.com.example.com' (partial)
DEBUG [kea-dhcp4.ddns] DHCP4_RESPONSE_FQDN_DATA [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: including FQDN option in the
server's response: type=81 (CLIENT_FQDN), flags: (N=0, E=0, O=0, S=0),
domain-name='printerdevice.example.com.example.com.example.com.' (full)
DEBUG [kea-dhcp4.alloc-engine] ALLOC_ENGINE_V4_REQUEST_EXTEND_LEASE [hwtype=1
00:21:b7:f3:d8:20], cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: extending
lifetime of the lease for address 10.36.9.104
INFO [kea-dhcp4.leases] DHCP4_LEASE_ALLOC [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: lease 10.36.9.104 has been allocated
DEBUG [kea-dhcp4.ddns] DHCP4_NCR_CREATE [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: DDNS updates enabled, therefore
sending name change requests
DEBUG [kea-dhcp4.options] DHCP4_PACKET_PACK [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: preparing on-wire format of the
packet to be sent
DEBUG [kea-dhcp4.packets] DHCP4_PACKET_SEND [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: trying to send packet DHCPACK (type
5) from 192.168.100.114:67 to 10.36.9.97:67 on interface ens192
DEBUG [kea-dhcp4.packets] DHCP4_RESPONSE_DATA [hwtype=1 00:21:b7:f3:d8:20],
cid=[01:00:21:b7:f3:d8:20], tid=0xf2110003: responding with packet DHCPACK
(type 5), packet details: local_address=192.168.100.114:67,
remote_address=10.36.9.97:67, msg_type=DHCPACK (5),
transid=0xf2110003,#012options:#012 type=001, len=004: 4294967264 (uint32)#012
type=003, len=004: 10.36.9.97#012 type=006, len=008: 192.168.100.15
192.168.100.14#012 type=042, len=008: 192.168.100.15 192.168.100.14#012
type=044, len=004: 192.168.100.15#012 type=051, len=004: 1209600 (uint32)#012
type=053, len=001: 5 (uint8)#012 type=054, len=004: 192.168.100.114#012
type=058, len=004: 604800 (uint32)#012 type=059, len=004: 604800 (uint32)#012
type=061, len=007: 01:00:21:b7:f3:d8:20#012 type=81 (CLIENT_FQDN), flags:
(N=0, E=0, O=0, S=0),
domain-name='printerdevice.example.com.example.com.example.com.' (full)
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