[Kea-users] kea-dhcpv6 won't offer adresses to clients
Django [Bastard Operator from Hell]
django at nausch.org
Sat May 4 17:52:30 UTC 2024
HI Marek!
Am 04.05.24 um 15:30 schrieb Marek Hajduczenia:
> I’d say it is the very same problem I ran into, i.e., your DHCPv6 Kea
> process is not bound to unicast v6 address on your interface eth1 when
> using only interface name.
OK. Thank you for your quick response. It's interesting that you had
similar problems!
> Check out
> https://gitlab.isc.org/isc-projects/kea/-/issues/2212#note_454562 and
> consider adding the unicast IPv6 address to your interface statement.
O.K. I have looked at the information behind the link you mentioned and
extended my configuration accordingly!
Well, here is my interface data for eth1 again:
root at vml000110:~# ip addr show eth1
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
UP group default qlen 1000
link/ether 52:54:00:41:11:02 brd ff:ff:ff:ff:ff:ff:ff:ff:ff
altname enp2s0
inet 10.0.10.110/24 brd 10.0.10.255 scope global eth1
valid_lft forever preferred_lft forever
inet6 2003:a:e0d:7607:10:0:10:110/64 scope global
valid_lft for always preferred_lft for always
inet6 fd00::7:10:0:0:110/64 Scope global
valid_lft for always preferred_lft for always
inet6 fe80::7:10:ff:fe10:110/64 Scope link
valid_lft forever preferred_lft forever
The unicast address is 2003:a:e0d:7607:10:0:10:110/64 I have also
adjusted the interface definition in my /etc/kea/kea-dhcp6.conf as follows:
root at vml000110:~# cat /etc/kea/kea-dhcp6.conf
{
‘Dhcp6’: {
‘interfaces-config’: {
‘interfaces’: [
„eth1/2003:a:e0d:7607:10:0:10:110“
]
},
‘subnet6’: [
{
„subnet“: „2003:a:e0d:7607::/64“,
‘pools’: [
{
‘pool’: ‘2003:a:e0d:7607:10:0:10:1000 -
2003:a:e0d:7607:10:0:10:2000’,
‘option-data’: [
{
‘name’: ‘domain-search’,
‘data’: ‘nausch.org’
}
]
}
]
}
]
}
}
As in your example, the binding is then also made to the unicast IPv6
address:
root at vml000110:~# ss -tulpn | grep 547
udp UNCONN 0 0 [2003:a:e0d:7607:10:0:10:110]:547 [::]:*
users:((‘kea-dhcp6’,pid=991,fd=10))
udp UNCONN 0 0 [fe80::7:10:ff:fe10:110]%eth1:547 [::]:*
users:((‘kea-dhcp6’,pid=991,fd=11))
udp UNCONN 0 0 [ff02::1:2]%eth1:547 [::]:*
users:((‘kea-dhcp6’,pid=991,fd=12))
_B_U_T_:_
If I restart my kea-dhcp6 now:
root at vml000110:~# systemctl start kea-dhcp6.service
I see in the syslog:
root at vml000110:~# journalctl -fu kea-dhcp6
May 04 19:44:26 vml000110 systemd[1]: Started ISC Kea IPv6 DHCP daemon.
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.717 INFO
[kea-dhcp6.dhcp6/1045.135176525759232] DHCP6_STARTING Kea DHCPv6 server
version 2.4.1 (stable) starting
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.718 INFO
[kea-dhcp6.hosts/1045.135176525759232] HOSTS_BACKENDS_REGISTERED the
following host backend types are available: mysql postgresql
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.719 WARN
[kea-dhcp6.dhcpsrv/1045.135176525759232]
DHCPSRV_MT_DISABLED_QUEUE_CONTROL disabling dhcp queue control when
multi-threading is enabled.
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.719 WARN
[kea-dhcp6.dhcp6/1045.135176525759232]
DHCP6_RESERVATIONS_LOOKUP_FIRST_ENABLED Multi-threading is enabled and
host reservations lookup is always performed first.
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.719 WARN
[kea-dhcp6.dhcpsrv/1045.135176525759232]
DHCPSRV_CONFIGURED_SUBNET_WITHOUT_ID a subnet was configured without an
id: 2003:a:e0d:7607::/64
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.719 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232] DHCPSRV_CFGMGR_NEW_SUBNET6 a
new subnet has been added to configuration: 2003:a:e0d:7607::/64 with
params: valid-lifetime=7200, rapid-commit is false
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.719 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232]
DHCPSRV_CFGMGR_SOCKET_TYPE_SELECT using socket type raw
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.720 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232] DHCPSRV_CFGMGR_USE_UNICAST
listening on unicast address 2003:a:e0d:7607:10:0:10:110, on interface eth1
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.720 INFO
[kea-dhcp6.dhcp6/1045.135176525759232] DHCP6_CONFIG_COMPLETE DHCPv6
server has completed configuration: added IPv6 subnets: 1; DDNS: disabled
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.723 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232] DHCPSRV_MEMFILE_DB opening
memory file lease database: type=memfile universe=6
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.724 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232] DHCPSRV_MEMFILE_LEASE_FILE_LOAD
loading leases from file /var/lib/kea/kea-leases6.csv.2
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.724 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232] DHCPSRV_MEMFILE_LEASE_FILE_LOAD
loading leases from file /var/lib/kea/kea-leases6.csv
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.724 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232]
DHCPSRV_MEMFILE_BUILD_EXTENDED_INFO_TABLES6 building extended info
tables saw 0 leases, extended info sanity checks modified 0 / updated 0
leases and 0 leases were entered into tables
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.724 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232] DHCPSRV_MEMFILE_LFC_SETUP
setting up the Lease File Cleanup interval to 3600 sec
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.725 INFO
[kea-dhcp6.dhcp6/1045.135176525759232] DHCP6_USING_SERVERID server is
using server-id 00:01:00:01:2d:c7:a3:0e:52:54:00:41:11:01 and stores in
the file /var/lib/kea/kea-dhcp6-serverid
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.725 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232] DHCPSRV_CFGMGR_USE_ALLOCATOR
using the iterative allocator for IA_NA leases in subnet
2003:a:e0d:7607::/64
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.725 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232] DHCPSRV_CFGMGR_USE_ALLOCATOR
using the iterative allocator for IA_TA leases in subnet
2003:a:e0d:7607::/64
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.725 INFO
[kea-dhcp6.dhcpsrv/1045.135176525759232] DHCPSRV_CFGMGR_USE_ALLOCATOR
using the iterative allocator for IA_PD leases in subnet
2003:a:e0d:7607::/64
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.726 WARN
[kea-dhcp6.dhcp6/1045.135176525759232] DHCP6_MULTI_THREADING_INFO
enabled: yes, number of threads: 4, queue size: 64
May 04 19:44:26 vml000110 kea-dhcp6[1045]: 2024-05-04 19:44:26.726 INFO
[kea-dhcp6.dhcp6/1045.135176525759232] DHCP6_STARTED Kea DHCPv6 server
version 2.4.1 started
But I still do NOT get an IPv6 unicast address assigned to the client :(
The tcpdump shows
root at vml000110:~# tcpdump -v -i eth1 | grep IP6
tcpdump: listening on eth1, link-type EN10MB (Ethernet), snapshot length
262144 bytes
19:46:35.850085 IP6 (hlim 1, next-header Options (0) payload length: 56)
:: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6,
multicast listener report v2, 2 group record(s) [gaddr ff02::1:ff44:b000
to_ex, 0 source(s)] [gaddr ff02::fb to_ex, 0 source(s)]
19:46:35.982156 IP6 (hlim 1, next-header Options (0) payload length: 56)
:: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6,
multicast listener report v2, 2 group record(s) [gaddr ff02::1:ff44:b000
to_ex, 0 source(s)] [gaddr ff02::fb to_ex, 0 source(s)]
19:46:36.038167 IP6 (hlim 255, next-header ICMPv6 (58) payload length:
32) :: > ff02::1:ff44:b000: [icmp6 sum ok] ICMP6, neighbour
solicitation, length 32, who has fe80::e9a6:bb03:1544:b000
19:46:37. 054458 IP6 (hlim 1, next-header Options (0) payload length:
56) fe80::e9a6:bb03:1544:b000 > ff02::16: HBH (rtalert: 0x0000) (padn)
[icmp6 sum ok] ICMP6, multicast listener report v2, 2 group record(s)
[gaddr ff02::1:ff44:b000 to_ex, 0 source(s)] [gaddr ff02::fb to_ex, 0
source(s)]
19:46:37.199146 IP6 (flowlabel 0x05605, hlim 255, next-header ICMPv6
(58) payload length: 8) fe80::e9a6:bb03:1544:b000 > ff02::2: [icmp6 sum
ok] ICMP6, router solicitation, length 8
19:46:37.944654 IP6 (flowlabel 0xf2caa, hlim 255, next-header UDP (17)
payload length: 148) fe80::e9a6:bb03:1544:b000.mdns > ff02::fb.mdns:
[udp sum ok] 0*- [0q] 2/0/0
0.0.0.b.4.4.5.1.3.0.b.b.6.a.9.e.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa.
(cache flush) PTR nitropad.local., nitropad.local. (cache flush) AAAA
fe80::e9a6:bb03:1544:b000 (140)
19:46:37. 950224 IP6 (hlim 1, next-header Options (0) payload length:
56) fe80::e9a6:bb03:1544:b000 > ff02::16: HBH (rtalert: 0x0000) (padn)
[icmp6 sum ok] ICMP6, multicast listener report v2, 2 group record(s)
[gaddr ff02::1:ff44:b000 to_ex, 0 source(s)] [gaddr ff02::fb to_ex, 0
source(s)]
19:46:38.933831 IP6 (flowlabel 0xf2caa, hlim 255, next-header UDP (17)
payload length: 149) fe80::e9a6:bb03:1544:b000.mdns > ff02::fb.mdns:
[udp sum ok] 0 [9q] PTR (QM)? _nfs._tcp.local. PTR (QM)?
_ipp._tcp.local. PTR (QM)? _ipps._tcp.local. PTR (QM)? _ftp._tcp.local.
PTR (QM)? _webdav._tcp.local. PTR (QM)? _webdavs._tcp.local. PTR (QM)?
_sftp-ssh._tcp.local. PTR (QM)? _smb._tcp.local. PTR (QM)?
_afpovertcp._tcp.local. (141)
19:46:40.121315 IP6 (flowlabel 0xf2caa, hlim 255, next-header UDP (17)
payload length: 148) fe80::e9a6:bb03:1544:b000.mdns > ff02::fb.mdns:
[udp sum ok] 0*- [0q] 2/0/0
0.0.0.b.4.4.5.1.3.0.b.b.6.a.9.e.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa.
(cache flush) PTR nitropad.local., nitropad.local. (cache flush) AAAA
fe80::e9a6:bb03:1544:b000 (140)
19:46:40.801047 IP6 (flowlabel 0x05605, hlim 255, next-header ICMPv6
(58) payload length: 8) fe80::e9a6:bb03:1544:b000 > ff02::2: [icmp6 sum
ok] ICMP6, router solicitation, length 8
19:46:42.936439 IP6 (flowlabel 0xf2caa, hlim 255, next-header UDP (17)
payload length: 149) fe80::e9a6:bb03:1544:b000.mdns > ff02::fb.mdns:
[udp sum ok] 0 [9q] PTR (QM)? _nfs._tcp.local. PTR (QM)?
_ipp._tcp.local. PTR (QM)? _ipps._tcp.local. PTR (QM)? _ftp._tcp.local.
PTR (QM)? _webdav._tcp.local. PTR (QM)? _webdavs._tcp.local. PTR (QM)?
_sftp-ssh._tcp.local. PTR (QM)? _smb._tcp.local. PTR (QM)?
_afpovertcp._tcp.local. (141)
19:46:47. 002250 IP6 (hlim 1, next-header Options (0) payload length:
56) fe80::e9a6:bb03:1544:b000 > ff02::16: HBH (rtalert: 0x0000) (padn)
[icmp6 sum ok] ICMP6, multicast listener report v2, 2 group record(s)
[gaddr ff02::1:ff44:b000 to_ex, 0 source(s)] [gaddr ff02::fb to_ex, 0
source(s)]
19:46:47. 806226 IP6 (hlim 1, next-header Options (0) payload length:
56) fe80::e9a6:bb03:1544:b000 > ff02::16: HBH (rtalert: 0x0000) (padn)
[icmp6 sum ok] ICMP6, multicast listener report v2, 2 group record(s)
[gaddr ff02::1:ff44:b000 to_ex, 0 source(s)] [gaddr ff02::fb to_ex, 0
source(s)]
19:46:47.913215 IP6 (flowlabel 0x05605, hlim 255, next-header ICMPv6
(58) payload length: 8) fe80::e9a6:bb03:1544:b000 > ff02::2: [icmp6 sum
ok] ICMP6, router solicitation, length 8
19:46:50.940805 IP6 (flowlabel 0xf2caa, hlim 255, next-header UDP (17)
payload length: 149) fe80::e9a6:bb03:1544:b000.mdns > ff02::fb.mdns:
[udp sum ok] 0 [9q] PTR (QM)? _nfs._tcp.local. PTR (QM)?
_ipp._tcp.local. PTR (QM)? _ipps._tcp.local. PTR (QM)? _ftp._tcp.local.
PTR (QM)? _webdav._tcp.local. PTR (QM)? _webdavs._tcp.local. PTR (QM)?
_sftp-ssh._tcp.local. PTR (QM)? _smb._tcp.local. PTR (QM)?
_afpovertcp._tcp.local. (141)
19:47:02.226467 IP6 (flowlabel 0x05605, hlim 255, next-header ICMPv6
(58) payload length: 8) fe80::e9a6:bb03:1544:b000 > ff02::2: [icmp6 sum
ok] ICMP6, router solicitation, length 8
19:47:06.946989 IP6 (flowlabel 0xf2caa, hlim 255, next-header UDP (17)
payload length: 149) fe80::e9a6:bb03:1544:b000.mdns > ff02::fb.mdns:
[udp sum ok] 0 [9q] PTR (QM)? _nfs._tcp.local. PTR (QM)?
_ipp._tcp.local. PTR (QM)? _ipps._tcp.local. PTR (QM)? _ftp._tcp.local.
PTR (QM)? _webdav._tcp.local. PTR (QM)? _webdavs._tcp.local. PTR (QM)?
_sftp-ssh._tcp.local. PTR (QM)? _smb._tcp.local. PTR (QM)?
_afpovertcp._tcp.local. (141)
^C99 packets captured
99 packets received by filter
0 packets dropped by kernel
So somehow it's very strange, I would say, and that could be the reason.
What should I adjust or change?
ttyl
Django
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