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Hi, <br>
I would like to know if anyone has successfully configured prefix
delegation in dhcpv6.<br>
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).<br>
<br>
<b>My kea setup is as follows:</b><br>
<br>
# cat /etc/kea/kea.conf
<br>
<br>
{
<br>
# DHCPv6 configuration starts on the next line
<br>
"Dhcp6": {
<br>
<br>
# First we set up global values
<br>
"interfaces": [ "eth0" ],
<br>
"renew-timer": 1000,
<br>
"rebind-timer": 2000,
<br>
"preferred-lifetime": 3000,
<br>
"valid-lifetime": 4000,
<br>
<br>
"option-data": [
<br>
{
<br>
"name": "dns-servers",
<br>
"code": 23,
<br>
"space": "dhcp6",
<br>
"csv-format": true,
<br>
"data": "2800:820:1:2::18"
<br>
}
<br>
],
<br>
# Next we specify the type of lease database
<br>
"lease-database": {
<br>
"type": "memfile",
<br>
"persist": true,
<br>
"name": "/usr/local/var/kea/kea-leases6.csv"
<br>
},
<br>
<br>
# Finally, we list the subnets from which we will be leasing
addresses.
<br>
"subnet6": [
<br>
{ "subnet": "2800:820:1:4::/64", "pools": [ { "pool":
"2800:820:1:4::228-2800:820:1:4::254" } ],"interface": "eth0" },
<br>
{ "subnet": "2800:820:3::/56",
<br>
"pd-pools": [ { "prefix": "2800:820:3::", "prefix-len":
56, "delegated-len": 60 } ],"interface": "eth0"
<br>
}
<br>
]
<br>
},
<br>
# The following configures logging. It assumes that warning
messages
<br>
# will be logged to stdout.
<br>
"Logging": {
<br>
"loggers": [
<br>
{
<br>
"name": "kea-dhcp6",
<br>
"output_options": [
<br>
{
<br>
# "output": "tdout"
<br>
"output": "/usr/local/var/kea/kea.log"
<br>
}
<br>
],
<br>
"severity": "WARN"
<br>
}
<br>
]
<br>
}
<br>
<br>
# DHCPv6 configuration ends with the next line
<br>
}
<br>
<br>
<b>In logs I see that it delivers a lease of IA_NA but it cannot
deliver IA_PD:</b><br>
<br>
# tail /usr/local/var/kea/kea.log
<br>
<br>
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
<br>
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
<br>
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
<br>
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
<br>
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))
<br>
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
<br>
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
<br>
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
<br>
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)
<br>
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))
<br>
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
<br>
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
<br>
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
<br>
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
<br>
msgtype=2, transid=0x80e1c
<br>
type=1, len=14: 00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d
<br>
type=2, len=14: 00:01:00:01:1c:22:ed:15:00:01:2e:2a:02:fa
<br>
type=3(IA_NA) iaid=1, t1=1000, t2=2000 1 sub-options:
<br>
type=5(IAADDR) addr=2800:820:1:4::229, preferred-lft=3000,
valid-lft=4000
<br>
<br>
type=23 1addr(s): 2800:820:1:2::18
<br>
type=25(IA_PD) iaid=1, t1=0, t2=0 1 sub-options:
<br>
type=13, len=40, data fields:
<br>
#0 6 ( uint16 )
<br>
#1 Sorry, no prefixes could be allocated. ( string )
<br>
<br>
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
<br>
msgtype=2, transid=0x80e1c
<br>
type=1, len=14: 00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d
<br>
type=2, len=14: 00:01:00:01:1c:22:ed:15:00:01:2e:2a:02:fa
<br>
type=3(IA_NA) iaid=1, t1=1000, t2=2000 1 sub-options:
<br>
type=5(IAADDR) addr=2800:820:1:4::229, preferred-lft=3000,
valid-lft=4000
<br>
<br>
type=23 1addr(s): 2800:820:1:2::18
<br>
type=25(IA_PD) iaid=1, t1=0, t2=0 1 sub-options:
<br>
type=13, len=40, data fields:
<br>
#0 6 ( uint16 )
<br>
#1 Sorry, no prefixes could be allocated. ( string )
<br>
<br>
2015-02-02 12:18:06.839 DEBUG [kea-dhcp6.dhcp6/30329]
DHCP6_PACKET_RECEIVED REQUEST packet received
<br>
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
<br>
msgtype=3, transid=0x22c8ee
<br>
type=1, len=14: 00:01:00:01:1c:47:92:c6:00:19:21:78:c6:8d
<br>
type=2, len=14: 00:01:00:01:1c:22:ed:15:00:01:2e:2a:02:fa
<br>
type=3(IA_NA) iaid=1, t1=4294967295, t2=4294967295 1 sub-options:
<br>
type=5(IAADDR) addr=2800:820:1:4::229, preferred-lft=3000,
valid-lft=4000
<br>
<br>
type=6, len=2:
<br>
type=8, len=2:
<br>
type=25(IA_PD) iaid=1, t1=4294967295, t2=4294967295 0 sub-options:
<br>
<br>
<b>Server IP conf is:</b><br>
<br>
# ip -6 addr list
<br>
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436
<br>
inet6 ::1/128 scope host
<br>
valid_lft forever preferred_lft forever
<br>
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
<br>
inet6 2800:820:1:4::1/64 scope global
<br>
valid_lft forever preferred_lft forever
<br>
inet6 fe80::201:2eff:fe2a:2fa/64 scope link
<br>
valid_lft forever preferred_lft forever
<br>
<br>
<br>
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