[Kea-users] DDNS not triggered with DHCP6

Leander Janssen leander at itforge.nl
Sun Nov 6 21:57:37 UTC 2016


 
I've configured both DHCPv6 and DDNS. DHCPv6 leases are working properly, but DDNS is not triggered.

I'm wondering if this is configuration related or some other issue?

DHCP4 in combination with DDNS is working fine.

The version of kea is 1.0.0

I'm using the following configuration.

DHCP6:  

"dhcp-ddns": {  
 "enable-updates": true,
 "override-client-update": true,
 "override-no-update": true,
 "generated-prefix": "host",
 "qualifying-suffix": "home.vforge.net."
},

DDNS:  

"forward-ddns": {  
 "ddns-domains": [
  {
   "name": "home.vforge.net.",
   "key-name": "dhcp-update",
   "dns-servers": [
    { "ip-address": "192.168.10.53" },
    { "ip-address": "2001:610:64f:10::100:53" }
   ]
  }
]
},
"reverse-ddns": {
 "ddns-domains": [
 {
  "name": "10.168.192.in-addr.arpa.",
  "key-name": "dhcp-update",
  "dns-servers": [ { "ip-address": "192.168.10.53" } ]
 },
 {
  "name": "0.1.0.0.f.4.6.0.0.1.6.0.1.0.0.2.ip6.arpa.",
  "key-name": "dhcp-update",
  "dns-servers": [ { "ip-address": "2001:610:64f:10::100:53" } ]
 }
 ]
}


The debug log of DHCP6 shows the following entries when a client requests an IP address:  

2016-11-06 22:35:51.309 DEBUG [kea-dhcp6.packets/7998] DHCP6_BUFFER_RECEIVED received buffer from fe80::3e15:c2ff:fee0:332e:546 to ff02::1:2:0 over interface eth0  
2016-11-06 22:35:51.309 DEBUG [kea-dhcp6.options/7998] DHCP6_BUFFER_UNPACK parsing buffer received from fe80::3e15:c2ff:fee0:332e to ff02::1:2 over interface eth0
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.packets/7998] DHCP6_PACKET_RECEIVED duid=[00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e], tid=0x8f584e: CONFIRM (type 4) received from fe80::3e15:c2ff:fee0:332e to ff02::1:2 on interface eth0
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.packets/7998] DHCP6_QUERY_DATA duid=[00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e], tid=0x8f584e, packet details: localAddr=[ff02::1:2]:0 remoteAddr=[fe80::3e15:c2ff:fee0:332e]:546
msgtype=4, transid=0x8f584e
type=00001, len=00014: 00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e
type=00003(IA_NA), len=00040: iaid=0, t1=0, t2=0,
options:
type=00005(IAADDR), len=00024: address=2001:610:64f:10:200::28, preferred-lft=0, valid-lft=0
type=00006, len=00004: 23(uint16) 24(uint16)
type=00008, len=00002: 0 (uint16)

2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.dhcpsrv/7998] DHCPSRV_CFGMGR_SUBNET6_IFACE selected subnet 2001:610:64f:10::/64 for packet received over interface eth0  
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.packets/7998] DHCP6_SUBNET_SELECTED duid=[00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e], tid=0x8f584e: the subnet with ID 1 was selected for client assignments
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.packets/7998] DHCP6_SUBNET_DATA duid=[00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e], tid=0x8f584e: the selected subnet details: 2001:610:64f:10::/64
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.hosts/7998] HOSTS_CFG_GET_ONE_SUBNET_ID_HWADDR_DUID get one host with IPv6 reservation for subnet id 1, HWADDR hwtype=1 3c:15:c2:e0:33:2e, DUID 00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.hosts/7998] HOSTS_CFG_GET_ALL_HWADDR_DUID get all hosts with reservations for HWADDR hwtype=1 3c:15:c2:e0:33:2e and DUID 00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.hosts/7998] HOSTS_CFG_GET_ALL_IDENTIFIER get all hosts with reservations using identifier: hwaddr=3c:15:c2:e0:33:2e
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.hosts/7998] HOSTS_CFG_GET_ALL_IDENTIFIER_COUNT using identifier hwaddr=3c:15:c2:e0:33:2e, found 0 host(s)
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.hosts/7998] HOSTS_CFG_GET_ALL_IDENTIFIER get all hosts with reservations using identifier: duid=00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.hosts/7998] HOSTS_CFG_GET_ALL_IDENTIFIER_COUNT using identifier duid=00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e, found 0 host(s)
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.hosts/7998] HOSTS_CFG_GET_ONE_SUBNET_ID_HWADDR_DUID_NULL host not found using subnet id 1, HW address hwtype=1 3c:15:c2:e0:33:2e and DUID 00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.options/7998] DHCP6_ADD_GLOBAL_STATUS_CODE duid=[00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e], tid=0x8f584e: adding Status Code to DHCPv6 packet: Success(0) "All addresses are on-link"
2016-11-06 22:35:51.310 DEBUG [kea-dhcp6.packets/7998] DHCP6_RESPONSE_DATA responding with packet type 7 data is localAddr=[ff02::1:2]:547 remoteAddr=[fe80::3e15:c2ff:fee0:332e]:546
msgtype=7, transid=0x8f584e
type=00001, len=00014: 00:01:00:01:1b:4d:82:bd:3c:15:c2:e0:33:2e
type=00002, len=00014: 00:01:00:01:1f:af:b0:6b:00:50:56:85:f1:08
type=00013, len=00027: Success(0) "All addresses are on-link"
type=00023, len=00032: 2001:610:64f:10::100:0 2001:4860:4860::8888
type=00024, len=00017: "home.vforge.net." (fqdn)

2016-11-06 22:35:51.311 DEBUG [kea-dhcp6.packets/7998] DHCP6_BUFFER_WAIT waiting for next DHCPv6 packet with timeout 1000 ms  
2016-11-06 22:35:52.061 DEBUG [kea-dhcp6.dhcpsrv/7998] DHCPSRV_TIMERMGR_RUN_TIMER_OPERATION running operation for timer: reclaim-expired-leases
2016-11-06 22:35:52.062 DEBUG [kea-dhcp6.alloc-engine/7998] ALLOC_ENGINE_V6_LEASES_RECLAMATION_START starting reclamation of expired leases (limit = 100 leases or 250 milliseconds)
2016-11-06 22:35:52.062 DEBUG [kea-dhcp6.dhcpsrv/7998] DHCPSRV_MEMFILE_GET_EXPIRED4 obtaining maximum 101 of expired IPv4 leases
2016-11-06 22:35:52.062 DEBUG [kea-dhcp6.alloc-engine/7998] ALLOC_ENGINE_V6_LEASES_RECLAMATION_COMPLETE reclaimed 0 leases in 0.036 ms
2016-11-06 22:35:52.062 DEBUG [kea-dhcp6.alloc-engine/7998] ALLOC_ENGINE_V6_NO_MORE_EXPIRED_LEASES all expired leases have been reclaimed
2016-11-06 22:35:52.062 DEBUG [kea-dhcp6.dhcpsrv/7998] DHCPSRV_TIMERMGR_START_TIMER starting timer: reclaim-expired-leases
2016-11-06 22:35:52.062 DEBUG [kea-dhcp6.packets/7998] DHCP6_BUFFER_WAIT_INTERRUPTED interrupted wait for the next packet due to timeout, signal or external socket callback (timeout value is 1000)
2016-11-06 22:35:52.062 DEBUG [kea-dhcp6.packets/7998] DHCP6_BUFFER_WAIT waiting for next DHCPv6 packet with timeout 1000 ms

Startup log of DHCP6:

Nov  6 22:35:42 heimdall kea-dhcp6[7998]: 2016-11-06 22:35:42.054 INFO  [kea-dhcp6.dhcp6/7998] DHCP6_STARTING Kea DHCPv6 server version 1.0.0 starting
Nov  6 22:35:42 heimdall kea-dhcp6[7998]: 2016-11-06 22:35:42.058 INFO  [kea-dhcp6.dhcpsrv/7998] DHCPSRV_CFGMGR_ADD_IFACE listening on interface eth0
Nov  6 22:35:42 heimdall kea-dhcp6[7998]: 2016-11-06 22:35:42.059 INFO  [kea-dhcp6.dhcp6/7998] DHCP6_CONFIG_NEW_SUBNET a new subnet has been added to configuration: 2001:610:64f:10::/64 with params t1=1000, t2=2000, preferred-lifetime=3000, valid-lifetime=4000, rapid-commit is disabled
Nov  6 22:35:42 heimdall kea-dhcp6[7998]: 2016-11-06 22:35:42.060 INFO  [kea-dhcp6.dhcp6/7998] DHCP6_CONFIG_NEW_SUBNET a new subnet has been added to configuration: 2001:610:64f:99::/64 with params t1=1000, t2=2000, preferred-lifetime=3000, valid-lifetime=4000, rapid-commit is disabled
Nov  6 22:35:42 heimdall kea-dhcp6[7998]: 2016-11-06 22:35:42.060 INFO  [kea-dhcp6.dhcpsrv/7998] DHCPSRV_MEMFILE_DB opening memory file lease database: lfc-interval=1800 name=/var/lib/kea/kea-leases6.csv persist=true type=memfile universe=6
Nov  6 22:35:42 heimdall kea-dhcp6[7998]: 2016-11-06 22:35:42.060 INFO  [kea-dhcp6.dhcpsrv/7998] DHCPSRV_MEMFILE_LEASE_FILE_LOAD loading leases from file /var/lib/kea/kea-leases6.csv
Nov  6 22:35:42 heimdall kea-dhcp6[7998]: 2016-11-06 22:35:42.061 INFO  [kea-dhcp6.dhcpsrv/7998] DHCPSRV_MEMFILE_LFC_SETUP setting up the Lease File Cleanup interval to 1800 sec
Nov  6 22:35:42 heimdall kea-dhcp6[7998]: 2016-11-06 22:35:42.061 INFO  [kea-dhcp6.dhcp6/7998] DHCP6_CONFIG_COMPLETE DHCPv6 server has completed configuration: added IPv6 subnets: 2; DDNS: enabled
Nov  6 22:35:42 heimdall kea-dhcp6[7998]: 2016-11-06 22:35:42.061 INFO  [kea-dhcp6.dhcp6/7998] DHCP6_USING_SERVERID server is using server-id 00:01:00:01:1f:af:b0:6b:00:50:56:85:f1:08 and stores in the file /var/lib/kea/kea-dhcp6-serverid
Nov  6 22:35:42 heimdall kea-dhcp6[7998]: 2016-11-06 22:35:42.061 INFO  [kea-dhcp6.dhcpsrv/7998] DHCPSRV_DHCP_DDNS_SENDER_STARTED NameChangeRequest sender has been started: enable_updates: yes, server_ip: 127.0.0.1, server_port: 53001, sender_ip: 0.0.0.0, sender_port: 0, max_queue_size: 1024, ncr_protocol: 0, ncr_format: 0, always_include_fqdn: no, override_no_update: yes, override_client_update: yes, replace_client_name: no, generated_prefix: [host], qualifying_suffix: [home.vforge.net.]

--  
Kind Regards,

Leander Janssen




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