<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"> Hi Yu.<div>Thank you for the reply.</div><div><br></div><div>Kea is a vm on hypervisor, there is one additional vm for testing - it acts like a dhcp client. Rest of the network are physical computers. They are in the same network - no vlans etc. For v4 we can say they all use 192.168.0.0/24, for v6 there is one prefix for all of them as well.</div><div><br></div><div>The old ISC dhcp server was the vm on the same hypervisor with the same IP4/6 addresses assigned.</div><div><br></div><div>Jan<br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>19. 8. 2024 v 13:30, Xiao, Yu (CCI-Atlanta) <yu.xiao@cox.com>:</div><br class="Apple-interchange-newline"><div><meta charset="UTF-8"><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">Hi Jan,<o:p></o:p></span></div><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">“</span><span style="font-size: 11pt;">As I said, Kea and rest of the computers/clients are in the same network.</span><span style="font-size: 11pt;">”, are they on different VMs of the same hypervisor? If so, you may need to have a Virtual Router and then you will need to advertise the network using the vRouter, thus the clients know the routes to the V6 server.<o:p></o:p></span></div><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div><div><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></span></div><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif;">Best Regards,<o:p></o:p></span></div><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt; font-family: Calibri, sans-serif;">Yu<o:p></o:p></span></div></div></div><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div id="mail-editor-reference-message-container"><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentcolor currentcolor; border-image: none; padding: 3pt 0in 0in;"><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 10pt; font-family: Aptos, sans-serif;"><b><span style="font-size: 12pt;">From:<span class="Apple-converted-space"> </span></span></b><span style="font-size: 12pt;">Kea-users <<a href="mailto:kea-users-bounces@lists.isc.org" style="color: blue; text-decoration: underline;">kea-users-bounces@lists.isc.org</a>> on behalf of Jan Jurko via Kea-users <<a href="mailto:kea-users@lists.isc.org" style="color: blue; text-decoration: underline;">kea-users@lists.isc.org</a>><br><b>Date:<span class="Apple-converted-space"> </span></b>Sunday, August 18, 2024 at 7:03</span><span style="font-size: 12pt; font-family: Arial, sans-serif;"> </span><span style="font-size: 12pt;">AM<br><b>To:<span class="Apple-converted-space"> </span></b>Kea user's list <<a href="mailto:kea-users@lists.isc.org" style="color: blue; text-decoration: underline;">kea-users@lists.isc.org</a>><br><b>Cc:<span class="Apple-converted-space"> </span></b>Jan Jurko <<a href="mailto:jan@jurko.cz" style="color: blue; text-decoration: underline;">jan@jurko.cz</a>><br><b>Subject:<span class="Apple-converted-space"> </span></b>[EXTERNAL] Re: [Kea-users] Kea dhcp6 clients do not get IPs<o:p></o:p></span></p></div><div><div style="margin: 0in; font-size: 10pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">Hello Darren.<br>Thank you for your reply.<br><br>Kea and client are both on the same hypervizor, other clients are on the same network in the building so there should not be a problem with some fw etc.<br><br>I’ve enabled windows logs for dhcp and here they are:<br><br>1.<br>Information<br>Solicit is sent from the interface 4. Status code is 0x0<br><br>2.<br>Error<br>Message is invalid and it is discarded.<br><br>3.<br>Error<br>Your computer was not assigned an address from the network (by the DHCP server) for the Network Card with network address XXXX. The following error occured: 0x138E. Your computer will continue to try and obtain an address on its own from the network address (DHCP) server.<br><br><br>There is no firewall on the clients.<br><br>As I said, Kea and rest of the computers/clients are in the same network.<br><br>I’ve tried to create the small configuration - no reservations, only pool of addresses - the same bad result.<br><br>Thank you very much for your help.<br><br>Jan<br><br><br>> 18.</span><span style="font-size: 11pt; font-family: Arial, sans-serif;"> </span><span style="font-size: 11pt;">8.</span><span style="font-size: 11pt; font-family: Arial, sans-serif;"> </span><span style="font-size: 11pt;">2024 v 12:36, Darren Ankney <<a href="mailto:darren.ankney@gmail.com" style="color: blue; text-decoration: underline;">darren.ankney@gmail.com</a>>:<br>><span class="Apple-converted-space"> </span><br>> Hi Jan,<br>><span class="Apple-converted-space"> </span><br>> From the log messages you have shown, it appears that Kea is<br>> attempting to advertise some address to a client with DUID:<br>> 00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7 The client should next<br>> request this address but that isn't shown in your logs. The client<br>> must not like something about the advertisement or is not receiving<br>> the advertisement. It would be difficult to help without more<br>> information. Is this traffic relayed or do the client and server<br>> exist on the same physical network? Have you looked in the client<br>> logs (if exist) to see what it thinks is happening? You might try<br>> adding a small pool to the subnet to see what happens (i.e., does the<br>> client get an address, though I doubt that would be the case).<br>><span class="Apple-converted-space"> </span><br>> Thank you,<br>> Darren Ankney<br>><span class="Apple-converted-space"> </span><br>> On Sun, Aug 18, 2024 at 5:03</span><span style="font-size: 11pt; font-family: Arial, sans-serif;"> </span><span style="font-size: 11pt;">AM Jan Jurko via Kea-users<br>> <<a href="mailto:kea-users@lists.isc.org" style="color: blue; text-decoration: underline;">kea-users@lists.isc.org</a>> wrote:<br>>><span class="Apple-converted-space"> </span><br>>> Good day.<br>>> I have Kea 2.6.1 installed. I use v4 and v6 dhcp server. V4 works fine but v6 does not give clients IPv6 addresses. The setup is:<br>>><span class="Apple-converted-space"> </span><br>>> HW router with ipv6 enabled, RA enabled, M flag present. I do not use O flag because in the dualstack dns servers are on v4 addresses. So I just want to distribute ipv6 addresses from dhcp server to clients. I use hw-address to distribute addresses but I tried DUID as well.<br>>><span class="Apple-converted-space"> </span><br>>> I can see in the Kea logs this output:<br>>><span class="Apple-converted-space"> </span><br>>> 2024-08-18 10:44:32.959 INFO [kea-dhcp6.dhcp6/3542.140690709083840] DHCP6_QUERY_LABEL received query: duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948<br>>> 2024-08-18 10:44:32.959 INFO [kea-dhcp6.packets/3542.140690709083840] DHCP6_PACKET_RECEIVED duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948: SOLICIT (type 1) received from fe80::54a0:da31:647a:debc to ff02::1:2 on interface ens3<br>>> 2024-08-18 10:44:32.959 INFO [kea-dhcp6.packets/3542.140690709083840] DHCP6_PACKET_SEND duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948: trying to send packet ADVERTISE (type 2) from [ff02::1:2]:547 to [fe80::54a0:da31:647a:debc]:546 on interface ens3<br>>> 2024-08-18 10:44:33.957 INFO [kea-dhcp6.dhcp6/3542.140690717476544] DHCP6_QUERY_LABEL received query: duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948<br>>> 2024-08-18 10:44:33.958 INFO [kea-dhcp6.packets/3542.140690717476544] DHCP6_PACKET_RECEIVED duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948: SOLICIT (type 1) received from fe80::54a0:da31:647a:debc to ff02::1:2 on interface ens3<br>>> 2024-08-18 10:44:33.958 INFO [kea-dhcp6.packets/3542.140690717476544] DHCP6_PACKET_SEND duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948: trying to send packet ADVERTISE (type 2) from [ff02::1:2]:547 to [fe80::54a0:da31:647a:debc]:546 on interface ens3<br>>> 2024-08-18 10:44:33.959 INFO [kea-dhcp6.dhcp6/3542.140690709083840] DHCP6_QUERY_LABEL received query: duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948<br>>> 2024-08-18 10:44:33.959 INFO [kea-dhcp6.packets/3542.140690709083840] DHCP6_PACKET_RECEIVED duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948: SOLICIT (type 1) received from fe80::54a0:da31:647a:debc to ff02::1:2 on interface ens3<br>>> 2024-08-18 10:44:33.960 INFO [kea-dhcp6.packets/3542.140690709083840] DHCP6_PACKET_SEND duid=[00:01:00:01:2e:52:af:30:52:54:00:f4:c2:d7], [no hwaddr info], tid=0xbea948: trying to send packet ADVERTISE (type 2) from [ff02::1:2]:547 to [fe80::54a0:da31:647a:de<br>>><span class="Apple-converted-space"> </span><br>>><span class="Apple-converted-space"> </span><br>>> I’ve used the old ISC dhcp server but I want to migrace to Kea because the old ISC dhcp server is obsolette.<br>>><span class="Apple-converted-space"> </span><br>>> Configuration file looks like this (it is truncated because there are more than 200 records):<br>>><span class="Apple-converted-space"> </span><br>>><span class="Apple-converted-space"> </span><br>>><span class="Apple-converted-space"> </span><br>>> {<br>>> # /etc/dhcpd6.conf<br>>> #<br>>> # Sample DHCPv6 configuration file for ISC dhcpd<br>>> #<br>>> # *** PLEASE CONFIGURE IT FIRST ***<br>>> #<br>>> # Don't forget to set the DHCPD6_INTERFACE in the<br>>> # /etc/sysconfig/dhcpd file.<br>>> #<br>>> /// This configuration declares some subnets but has no interfaces-config<br>>> /// Reference Kea #245<br>>> "Dhcp6": {<br>>> "control-socket": {<br>>> "socket-type": "unix",<br>>> "socket-name": "/tmp/kea6-ctrl-socket"<br>>> },<br>>> "mac-sources": [<br>>> "any"<br>>> ],<br>>> "loggers": [<br>>> {<br>>> "name": "kea-dhcp6",<br>>> "severity": "DEBUG",<br>>> "output_options": [<br>>> {<br>>> "output": "/var/log/kea/dhcp6.log",<br>>> "maxver": 10<br>>> }<br>>> ]<br>>> },<br>>> {<br>>> "name": "kea-dhcp6.dhcpsrv",<br>>> "severity": "DEBUG",<br>>> "output_options": [<br>>> {<br>>> "output": "/var/log/kea/dhcp6-dhcpsrv.log",<br>>> "maxver": 10<br>>> }<br>>> ]<br>>> },<br>>> {<br>>> "name": "kea-dhcp6.leases",<br>>> "severity": "DEBUG",<br>>> "output_options": [<br>>> {<br>>> "output": "/var/log/kea/dhcp6-leases.log",<br>>> "maxver": 10<br>>> }<br>>> ]<br>>> }<br>>> ],<br>>> "interfaces-config": {<br>>> "interfaces": [ "ens3" ]<br>>> },<br>>> "subnet6": [<br>>> {<br>>> "id": 1,<br>>> "subnet": „2001:XXX:XXX:0::/64",<br>>> "reservations": [<br>>> {<br>>> "hostname": „XXX",<br>>> "hw-address": "08:8f:c3:f5:ab:49",<br>>> "ip-addresses": [<br>>> „2001:XXX:XXX:0:192:168:1:75"<br>>> ]<br>>> },<br>>> {<br>>> "hostname": „AAAAA",<br>>> "hw-address": "08:97:98:d7:c5:d0",<br>>> "ip-addresses": [<br>>> „2001:XXX:XXX:0:192:168:0:169"<br>>> ]<br>>> }<br>>> ]<br>>> }<br>>> ]<br>>> }<br>>> }<br>>><span class="Apple-converted-space"> </span><br>>> Thank you for your help. I’ve spent more than 10 hours debugging this problem, but still no luck.<br>>><span class="Apple-converted-space"> </span><br>>> Jan<br>>> --<br>>> ISC funds the development of this software with paid support subscriptions. 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