[Kea-users] Prefix delegation

Mon Feb 2 15:11:00 UTC 2015

Hi,
I would like to know if anyone has successfully configured prefix 
delegation in dhcpv6.
In my case I'm trying to delegate network prefixes 2800:820:3::/56 to 
customers that require it (without specifying any subnet in particular).

*My kea setup is as follows:*

# cat /etc/kea/kea.conf

{
# DHCPv6 configuration starts on the next line
"Dhcp6": {

# First we set up global values
     "interfaces": [ "eth0" ],
     "renew-timer": 1000,
     "rebind-timer": 2000,
     "preferred-lifetime": 3000,
     "valid-lifetime": 4000,

              "option-data": [
                  {
                      "name": "dns-servers",
                      "code": 23,
                      "space": "dhcp6",
                      "csv-format": true,
                      "data": "2800:820:1:2::18"
                  }
         ],
# Next we specify the type of lease database
     "lease-database": {
         "type": "memfile",
         "persist": true,
     "name": "/usr/local/var/kea/kea-leases6.csv"
     },

# Finally, we list the subnets from which we will be leasing addresses.
     "subnet6": [
         { "subnet": "2800:820:1:4::/64", "pools": [ { "pool": 
"2800:820:1:4::228-2800:820:1:4::254" } ],"interface": "eth0" },
         { "subnet": "2800:820:3::/56",
             "pd-pools": [ { "prefix": "2800:820:3::", "prefix-len": 56, 
"delegated-len": 60 } ],"interface": "eth0"
         }
     ]
},
# The following configures logging. It assumes that warning messages
# will be logged to stdout.
"Logging": {
     "loggers": [
         {
             "name": "kea-dhcp6",
             "output_options": [
                 {
#                    "output": "tdout"
                     "output": "/usr/local/var/kea/kea.log"
                 }
             ],
             "severity": "WARN"
         }
     ]
}

# DHCPv6 configuration ends with the next line
}

*In logs I see that it delivers a lease of IA_NA but it cannot deliver 
IA_PD:*

# tail /usr/local/var/kea/kea.log

2015-02-02 12:18:05.831 DEBUG [kea-dhcp6.dhcpsrv/30329] 
DHCPSRV_CFGMGR_SUBNET6_IFACE selected subnet 2800:820:1:4::/64 for 
packet received over interface eth0
2015-02-02 12:18:05.831 DEBUG [kea-dhcp6.dhcpsrv/30329] 
DHCPSRV_CFGMGR_SUBNET6_IFACE selected subnet 2800:820:1:4::/64 for 
packet received over interface eth0
2015-02-02 12:18:05.832 DEBUG [kea-dhcp6.dhcpsrv/30329] 
DHCPSRV_CFGMGR_SUBNET6_IFACE selected subnet 2800:820:1:4::/64 for 
packet received over interface eth0
2015-02-02 12:18:05.832 DEBUG [kea-dhcp6.dhcp6/30329] 
DHCP6_SUBNET_SELECTED the 2800:820:1:4::/64 subnet was selected for 
client assignment
2015-02-02 12:18:05.832 DEBUG [kea-dhcp6.dhcp6/30329] 
DHCP6_PROCESS_IA_NA_REQUEST server is processing IA_NA option 
(duid=00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d, iaid=1, hint=(no hint))
2015-02-02 12:18:05.832 DEBUG [kea-dhcp6.dhcpsrv/30329] 
DHCPSRV_MEMFILE_GET_IAID_SUBID_DUID obtaining IPv6 leases for IAID 1, 
Subnet ID 1, DUID 00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d and lease 
type IA_NA
2015-02-02 12:18:05.832 DEBUG [kea-dhcp6.dhcpsrv/30329] 
DHCPSRV_MEMFILE_GET_ADDR6 obtaining IPv6 lease for address 
2800:820:1:4::229 and lease type IA_NA
2015-02-02 12:18:05.832 DEBUG [kea-dhcp6.dhcpsrv/30329] 
DHCPSRV_MEMFILE_GET_ADDR6 obtaining IPv6 lease for address 
2800:820:1:4::229 and lease type IA_NA
2015-02-02 12:18:05.832 DEBUG [kea-dhcp6.dhcp6/30329] DHCP6_LEASE_ADVERT 
address lease 2800:820:1:4::229 advertised (client 
duid=00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d, iaid=1)
2015-02-02 12:18:05.832 DEBUG [kea-dhcp6.dhcp6/30329] 
DHCP6_PROCESS_IA_PD_REQUEST server is processing IA_PD option 
(duid=00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d, iaid=1, hint=(no hint))
2015-02-02 12:18:05.832 DEBUG [kea-dhcp6.dhcpsrv/30329] 
DHCPSRV_MEMFILE_GET_IAID_SUBID_DUID obtaining IPv6 leases for IAID 1, 
Subnet ID 1, DUID 00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d and lease 
type IA_PD
2015-02-02 12:18:05.832 ERROR [kea-dhcp6.dhcpsrv/30329] 
DHCPSRV_ADDRESS6_ALLOC_ERROR error during attempt to allocate an IPv6 
address: No pools defined in selected subnet
2015-02-02 12:18:05.832 DEBUG [kea-dhcp6.dhcp6/30329] 
DHCP6_PD_LEASE_ADVERT_FAIL failed to advertise a prefix lease for client 
duid=00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d, iaid=1
2015-02-02 12:18:05.833 DEBUG [kea-dhcp6.dhcp6/30329] 
DHCP6_RESPONSE_DATA responding with packet type 2 data is 
localAddr=[ff02::1:2]:547 remoteAddr=[fe80::2e0:4cff:fe0c:19fd]:546
msgtype=2, transid=0x80e1c
type=1, len=14: 00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d
type=2, len=14: 00:01:00:01:1c:22:ed:15:00:01:2e:2a:02:fa
type=3(IA_NA) iaid=1, t1=1000, t2=2000 1 sub-options:
   type=5(IAADDR) addr=2800:820:1:4::229, preferred-lft=3000, 
valid-lft=4000

type=23 1addr(s): 2800:820:1:2::18
type=25(IA_PD) iaid=1, t1=0, t2=0 1 sub-options:
   type=13, len=40, data fields:
     #0 6 ( uint16 )
     #1 Sorry, no prefixes could be allocated. ( string )

2015-02-02 12:18:05.833 DEBUG [kea-dhcp6.dhcp6/30329] 
DHCP6_RESPONSE_DATA responding with packet type 2 data is 
localAddr=[ff02::1:2]:547 remoteAddr=[fe80::2e0:4cff:fe0c:19fd]:546
msgtype=2, transid=0x80e1c
type=1, len=14: 00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d
type=2, len=14: 00:01:00:01:1c:22:ed:15:00:01:2e:2a:02:fa
type=3(IA_NA) iaid=1, t1=1000, t2=2000 1 sub-options:
   type=5(IAADDR) addr=2800:820:1:4::229, preferred-lft=3000, 
valid-lft=4000

type=23 1addr(s): 2800:820:1:2::18
type=25(IA_PD) iaid=1, t1=0, t2=0 1 sub-options:
   type=13, len=40, data fields:
     #0 6 ( uint16 )
     #1 Sorry, no prefixes could be allocated. ( string )

2015-02-02 12:18:06.839 DEBUG [kea-dhcp6.dhcp6/30329] 
DHCP6_PACKET_RECEIVED REQUEST packet received
2015-02-02 12:18:06.840 DEBUG [kea-dhcp6.dhcp6/30329] DHCP6_QUERY_DATA 
received packet length 3, data length 0, data is localAddr=[ff02::1:2]:0 
remoteAddr=[fe80::2e0:4cff:fe0c:19fd]:546
msgtype=3, transid=0x22c8ee
type=1, len=14: 00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d
type=2, len=14: 00:01:00:01:1c:22:ed:15:00:01:2e:2a:02:fa
type=3(IA_NA) iaid=1, t1=4294967295, t2=4294967295 1 sub-options:
   type=5(IAADDR) addr=2800:820:1:4::229, preferred-lft=3000, 
valid-lft=4000

type=6, len=2:
type=8, len=2:
type=25(IA_PD) iaid=1, t1=4294967295, t2=4294967295 0 sub-options:

*Server IP conf is:*

# ip -6 addr list
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436
     inet6 ::1/128 scope host
        valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
     inet6 2800:820:1:4::1/64 scope global
        valid_lft forever preferred_lft forever
     inet6 fe80::201:2eff:fe2a:2fa/64 scope link
        valid_lft forever preferred_lft forever

-- 
Interlink SRL
	*MAURO GASPARINI Telecomunicaciones*
mjgaspa at interlinksrl.com.ar
*INTERLINK SRL*
Corrientes 161 (2000) Rosario
Santa Fe - Argentina
Tel: +54 341 4248123 	

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