[Kea-users] Problem with kea-dhcp6
Wlodek Wencel
wlodek at isc.org
Wed May 23 14:33:46 UTC 2018
Hello,
we just released 1.4.0-beta if you are interested in testing it. But
getting back to your problem, I don't understand if you want just direct
traffic or not but I checked your configuration and noticed that you are
missing interface configuration within the subnet.
Section:
"subnet6": [
{
"subnet": "2001:db8:1::/64",
"pools": [ { "pool": "2001:db8:1::/64" } ]
}
]
change to:
"subnet6": [
{
"subnet": "2001:db8:1::/64",
"interface":"eth0",
"pools": [ { "pool": "2001:db8:1::/64" } ]
}
]
and let me know if that change anything.
Regards
Wlodek Wencel
ISC, QA
On 23/05/2018 13:15, Joelson Vendramin wrote:
> Anton,
>
> I'm still using Kea 1.2.0:
> # kea-dhcp6 -V
> 1.2.0
> tarball
> linked with:
> log4cplus 1.1.3
> OpenSSL 1.0.2h 3 May 2016
> database:
> Memfile backend 2.0
>
> Also built it from .tar.gz in a Slackware 14.2 64bit Linux distro. I
> didn't change any sysctl options (using defaults).
>
> Does your "ifconfig eth0" list a link-local (fe80::...) address?
> Also take a look at "netstat -g" to see if your eth0 is bounded with
> all IPv6 multicast addresses. Something like this:
> eth0 1 ff02::1:2
> eth0 1 ff02::1:????:?
> eth0 1 ff02::1:????:?
> eth0 1 ff02::1
> eth0 1 ff01::1
>
> Regards,
> --
> Joelson Vendramin
>
>
> Em terça-feira, 22 de maio de 2018 18:08:08 BRT, Anton Kiryushkin
> <swood at fotofor.biz> escreveu:
>
>
> Hello, Joelson!
>
> Thank you for your answer!
> Probably I'm using the wrong version of Kea? My version is:
>
> # kea-dhcp6 -V
> 1.3.0
> tarball
> linked with:
> log4cplus 1.2.1
> OpenSSL 1.0.2j-fips 26 Sep 2016
> database:
> MySQL backend 5.1, library 10.0.34-MariaDB
> PostgreSQL backend 3.1, library 90608
> Memfile backend 2.0
>
> I built it from source archive.
>
> I added section unicast to my configuration file but I've seen in my
> netstat only listening to the address from my network interface,
> nothing else.
> Do need I to turn on some sysctl options?
>
> 2018-05-22 17:41 GMT+01:00 Joelson Vendramin <jtvendramin at yahoo.com.br
> <mailto:jtvendramin at yahoo.com.br>>:
>
> Anton,
>
> Accordingly to Kea Guide (see http://kea.isc.org/docs/kea-
> guide.html#dhcp6-unicast
> <http://kea.isc.org/docs/kea-guide.html#dhcp6-unicast>)
> this config is to enable Kea to handle unicast traffic sent to the
> IPv6 global address. I use this because in my scenario Kea is
> working with relays.
>
> But it should listen as well to the link-local address (FE80:...)
> and also the multicast group (ff02::1:2).
>
> My "netstat -ln6" shows something like this and everything works
> as expected:
> (...)
> # netstat -ln6
> Active Internet connections (only servers)
> Proto Recv-Q Send-Q Local Address Foreign
> Address State
> (...)
> udp6 0 0 ff02::1:2:547 :::*
> udp6 0 0 fe80::e05d:d5ff:fee:547 :::*
> udp6 0 0 2001:db8:ffff::93::547 :::*
>
> Regards,
> --
> Joelson Vendramin
>
>
> Em terça-feira, 22 de maio de 2018 11:29:33 BRT, Anton Kiryushkin
> <swood at fotofor.biz <mailto:swood at fotofor.biz>> escreveu:
>
>
> Hello.
>
> There are some strange moments.
> When I tried to run a server like this, Kea listens 2001:db8:1::1
> (my address on the eth0), but when I ran ISC-dhcpdv6 it listens
> UDP :::547.
> So, when Kea has run I don't see any packets to
> address 2001:db8:1::1.
> Could you explain why Kea working differently?
>
> 2018-05-17 18:01 GMT+01:00 Joelson Vendramin
> <jtvendramin at yahoo.com.br <mailto:jtvendramin at yahoo.com.br>>:
>
> Hello Anton,
>
> Try to put the IPv6 address of your interface after eth0.
> This way:
>
> ...
> "interfaces-config": {
> "interfaces": [ "eth0/2001:db8:<...address...> " ]
> },
> ...
>
>
> Regards,
> --
> Joelson Vendramin
>
>
> Em quinta-feira, 17 de maio de 2018 13:32:12 BRT, Anton
> Kiryushkin <swood at fotofor.biz <mailto:swood at fotofor.biz>>
> escreveu:
>
>
> Hello.
>
> I have a simple configuration file:
>
> {
> "Dhcp6": {
> "interfaces-config": {
> "interfaces": [ "eth0" ]
> },
> "control-socket": {
> "socket-type": "unix",
> "socket-name": "/tmp/kea-dhcp6-ctrl.sock"
> },
> "lease-database": {
> "type": "memfile",
> "lfc-interval": 3600
> },
> "expired-leases-processing": {
> "reclaim-timer-wait-time": 10,
> "flush-reclaimed-timer-wait- time": 25,
> "hold-reclaimed-time": 3600,
> "max-reclaim-leases": 100,
> "max-reclaim-time": 250,
> "unwarned-reclaim-cycles": 5
> },
> "renew-timer": 1000,
> "rebind-timer": 2000,
> "preferred-lifetime": 3000,
> "valid-lifetime": 4000,
> "option-data": [
> {
> "name": "dns-servers",
> "data": "2001:db8:1::3"
> }
> ],
> "subnet6": [
> {
> "subnet": "2001:db8:1::/64",
> "pools": [ { "pool": "2001:db8:1::/64" } ]
> }
> ]
> },
> "Logging":
> {
> "loggers": [
> {
> "name": "kea-dhcp6",
> "output_options": [
> {
> "output": "/var/log/kea/dhcp6.log"
> }
> ],
> "severity": "DEBUG",
> "debuglevel": 20
> }
> ]
> }
> }
>
> But.
> When I tried to start it I saw the text below:
>
> 2018-05-17 16:22:39.970 INFO [kea-dhcp6.dhcp6/32344]
> DHCP6_STARTING Kea DHCPv6 server version 1.3.0 starting
> 2018-05-17 16:22:39.971 INFO [kea-dhcp6.dhcpsrv/32344]
> DHCPSRV_CFGMGR_ADD_IFACE listening on interface eth0
> 2018-05-17 16:22:39.972 INFO [kea-dhcp6.dhcpsrv/32344]
> DHCPSRV_CFGMGR_NEW_SUBNET4 a new subnet has been added to
> configuration: 2001:db8:1::/64 with params t1=1000, t2=2000,
> preferred-lifetime=3000, valid-lifetime=4000, rapid-commit is
> disabled
> 2018-05-17 16:22:39.972 INFO [kea-dhcp6.dhcp6/32344]
> DHCP6_CONFIG_COMPLETE DHCPv6 server has completed
> configuration: added IPv6 subnets: 1; DDNS: disabled
> 2018-05-17 16:22:39.973 INFO [kea-dhcp6.dhcpsrv/32344]
> DHCPSRV_MEMFILE_DB opening memory file lease database:
> lfc-interval=3600 type=memfile universe=6
> 2018-05-17 16:22:39.973 INFO [kea-dhcp6.dhcpsrv/32344]
> DHCPSRV_MEMFILE_LEASE_FILE_ LOAD loading leases from file
> /var/kea/kea-leases6.csv
> 2018-05-17 16:22:39.973 INFO [kea-dhcp6.dhcpsrv/32344]
> DHCPSRV_MEMFILE_LFC_SETUP setting up the Lease File Cleanup
> interval to 3600 sec
> 2018-05-17 16:22:39.973 INFO [kea-dhcp6.dhcp6/32344]
> DHCP6_USING_SERVERID server is using server-id
> 00:01:00:01:22:90:5e:e1:00:50: 56:af:e9:80 and stores in the
> file /var/kea/kea-dhcp6-serverid
> 2018-05-17 16:22:39.973 WARN [kea-dhcp6.dhcpsrv/32344]
> DHCPSRV_NO_SOCKETS_OPEN no interface configured to listen to
> DHCP traffic
>
>
> Why it wrote about DHCPSRV_NO_SOCKETS_OPEN except for DHCP6?
> Why didn't open any socket for DHCP6?
> Of course, I have an address from the subnet 2001:db8:1 on eth0.
>
> --
> Best regards,
> Anton Kiryushkin
>
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>
>
>
> --
> Best regards,
> Anton Kiryushkin
>
>
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>
>
>
> --
> Best regards,
> Anton Kiryushkin
>
>
>
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