<div dir="ltr"><div><div>Hi,<br><br></div>We have following configuration for ISC DHCPv6:<br><br>omapi-port 8913;<br>ddns-update-style none;<br>ping-check off;<br>authoritative;<br>default-lease-time 604800;<br>max-lease-time 604800;<br>log-facility local3;<br>preferred-lifetime 259200;<br>option dhcp6.info-refresh-time 129600;<br>option dhcp6.aftr-name code 64 = string;<br><br>deny duplicates;<br>one-lease-per-client on;<br><br>#dhcp01<br>subnet6 2a01:c840:110:8004::229/128 {<br>}<br>subnet6 2a01:c840:110:8004::230/128 {<br>}<br>subnet6 2a01:c840:110:8004::228/128 {<br>}<br>#dhcp02<br>subnet6 2a01:c840:130:8004::20/128 {<br>}<br>subnet6 2a01:c840:130:8004::21/128 {<br>}<br>subnet6 2a01:c840:130:8004::19/128 {<br>}<br><br>#testovaci subnet 1<br>subnet6 2a01:c840:50:5000::/62 {<br>  prefix6 2a01:c840:0050:2000:: 2a01:c840:0050:2300:: /56;<br>  #prefix6 2a01:c840:0050:2400:: 2a01:c840:0050:2700:: /56; #dedicated for static assigement<br>  # Additional options<br>  # aftr je <a href="http://aftr2.auro.orange.sk">aftr2.auro.orange.sk</a><br>  option dhcp6.aftr-name 05:61:66:74:72:32:04:61:75:72:6f:06:6f:72:61:6e:67:65:02:73:6b:00;<br>  option dhcp6.name-servers 2a01:c840:130:c000::10, 2a01:c840:110:c000::10;<br>}<br><br></div><div>#test subnet2<br></div><div> subnet6 2a01:c840:0070:0140::/64 {<br>   prefix6 2A01:C846:140:: 2A01:C846:17F:F000:: /56;<br>   # N-005-BA-OLT-02<br>   option dhcp6.aftr-name 61:61:66:74:72:32:2e:61:75:72:6f:2e:6f:72:61:6e:67:65:2e:73:6b ;<br>   # <a href="http://aaftr2.auro.orange.sk">aaftr2.auro.orange.sk</a><br>   option dhcp6.name-servers 2a01:c840:110:c000::10 , 2a01:c840:130:c000::10 ;<br> }<br><br></div><div>I am testing following scenarion:<br></div><div>- two relay agent exists (one for subnet1 and second from subnet 2)<br></div><div>- i try to migrate device from subnet2 into subnet1. I suppose that i will get another prefix delegation. But as you can see in the debug messages, it doesnt work.<br><br></div><div>Could you help me please? Thx<br></div><div><br><br><br></div>Here are log messages:<br>20180125155309 dhcp01 dhcpd-zk-inet: Internet Systems Consortium DHCP Server 4.3.6<br>20180125155309 dhcp01 dhcpd-zk-inet: Copyright 2004-2017 Internet Systems Consortium.<br>20180125155309 dhcp01 dhcpd-zk-inet: All rights reserved.<br>20180125155309 dhcp01 dhcpd-zk-inet: For info, please visit <a href="https://www.isc.org/software/dhcp/">https://www.isc.org/software/dhcp/</a><br>20180125155309 dhcp01 dhcpd-zk-inet: Wrote 0 deleted host decls to leases file.<br>20180125155309 dhcp01 dhcpd-zk-inet: Wrote 0 new dynamic host decls to leases file.<br>20180125155309 dhcp01 dhcpd-zk-inet: Wrote 0 NA, 0 TA, 1 PD leases to lease file.<br>20180125155309 dhcp01 dhcpd-zk-inet: Bound to *:547<br>20180125155309 dhcp01 dhcpd-zk-inet: Listening on Socket/5/zk-inet0/2a01:c840:110:8004::228/128<br>20180125155309 dhcp01 dhcpd-zk-inet: Sending on   Socket/5/zk-inet0/2a01:c840:110:8004::228/128<br>20180125155309 dhcp01 dhcpd-zk-inet: Server starting service.<br>20180125155311 dhcp01 dhcpd-zk-inet: Relay-forward message from 2a01:c840:70:140::1 port 547, link address 2a01:c840:70:140::1, peer address fe80::427d:fff:fe99:4727<br>20180125155311 dhcp01 dhcpd-zk-inet: Picking pool prefix 2a01:c846:17f:f000::/56<br>20180125155311 dhcp01 dhcpd-zk-inet: Advertise PD: address 2a01:c846:17f:f000::/56 to client with duid 00:03:00:01:40:7d:0f:99:47:27 iaid = 0 valid for 604800 seconds<br>20180125155311 dhcp01 dhcpd-zk-inet: Sending Relay-reply to 2a01:c840:70:140::1 port 547<br>20180125155312 dhcp01 dhcpd-zk-inet: Relay-forward message from 2a01:c840:70:140::1 port 547, link address 2a01:c840:70:140::1, peer address fe80::427d:fff:fe99:4727<br>20180125155312 dhcp01 dhcpd-zk-inet: Reply PD: address 2a01:c846:17f:f000::/56 to client with duid 00:03:00:01:40:7d:0f:99:47:27 iaid = 0 valid for 604800 seconds<br>20180125155312 dhcp01 dhcpd-zk-inet: Sending Relay-reply to 2a01:c840:70:140::1 port 547<br>20180125160001 dhcp01 dhcpd-zk-inet: Relay-forward message from 2a01:c840:70:140::1 port 547, link address 2a01:c840:70:140::1, peer address fe80::427d:fff:fe99:4727<br>20180125160001 dhcp01 dhcpd-zk-inet: Advertise PD: address 2a01:c846:17f:f000::/56 to client with duid 00:03:00:01:40:7d:0f:99:47:27 iaid = 0 valid for 604800 seconds<br>20180125160001 dhcp01 dhcpd-zk-inet: Sending Relay-reply to 2a01:c840:70:140::1 port 547<br>20180125160002 dhcp01 dhcpd-zk-inet: Relay-forward message from 2a01:c840:70:140::1 port 547, link address 2a01:c840:70:140::1, peer address fe80::427d:fff:fe99:4727<br>20180125160002 dhcp01 dhcpd-zk-inet: Reply PD: address 2a01:c846:17f:f000::/56 to client with duid 00:03:00:01:40:7d:0f:99:47:27 iaid = 0 valid for 604800 seconds<br>20180125160002 dhcp01 dhcpd-zk-inet: Sending Relay-reply to 2a01:c840:70:140::1 port 547<br>20180125160129 dhcp01 dhcpd-zk-inet: Relay-forward message from 2a01:c840:50:5001::1 port 547, link address 2a01:c840:50:5001::1, peer address fe80::427d:fff:fe99:4727<br>20180125160129 dhcp01 dhcpd-zk-inet: Advertise PD: address 2a01:c846:17f:f000::/56 to client with duid 00:03:00:01:40:7d:0f:99:47:27 iaid = 0 valid for 604800 seconds<br>20180125160129 dhcp01 dhcpd-zk-inet: Sending Relay-reply to 2a01:c840:50:5001::1 port 547<br>20180125160130 dhcp01 dhcpd-zk-inet: Relay-forward message from 2a01:c840:50:5001::1 port 547, link address 2a01:c840:50:5001::1, peer address fe80::427d:fff:fe99:4727<br>20180125160130 dhcp01 dhcpd-zk-inet: Reply PD: address 2a01:c846:17f:f000::/56 to client with duid 00:03:00:01:40:7d:0f:99:47:27 iaid = 0 valid for 604800 seconds<br>20180125160130 dhcp01 dhcpd-zk-inet: Sending Relay-reply to 2a01:c840:50:5001::1 port 547<br><br></div>