Looks like there is issue with primary-key:
run show dhcpv6 server binding detail
Session Id: 24
Client IPv6 Address: 2a22:f440:a:3::15/128
Lease Expires: 2010-02-17 13:54:25 EET
Lease Expires in: 676 seconds
Preferred Lease Expires: 2010-02-17 13:54:25 EET
Preferred Lease Expires in: 676 seconds
Client DUID: LL_TIME0x1-0x22208122-c4:12:f5:d4:aa:eb
State: BOUND(DHCPV6_LOCAL_SERVER_STATE_BOUND)
Lease Start: 2010-02-17 13:24:24 EET
Last Packet Received: 2010-02-17 13:39:25 EET
Incoming Client Interface: demux0.3221225493
Client Interface Svlan Id: 4020
Client Interface Vlan Id: 3000
Client Pool Name: v6-ia-na-pool
Client Prefix Pool Name: v6-ia-na-pool
Client Profile Name: IP-DHCPv4-DHCPv6
Client Id Length: 14
Client Id: /0x00010001/0x22208122/0xc412f5d4/0xaaeb
Dual Stack Group DS
Dual Stack key MAC/
There is key - mac address and dual-stack group assigned
But when i check dhcp server binding state:
Client IP Address: 10.200.4.17
Hardware Address: c4:12:f5:d4:aa:eb
State: BOUND(LOCAL_SERVER_STATE_BOUND)
Protocol-Used: DHCP
Lease Expires: 2010-02-17 13:46:45 EET
Lease Expires in: 202 seconds
Lease Start: 2010-02-17 13:24:15 EET
Last Packet Received: 2010-02-17 13:41:45 EET
Incoming Client Interface: demux0.3221225493
Client Interface Svlan Id: 4020
Client Interface Vlan Id: 3000
Server Identifier: 10.200.4.1
Session Id: 23
Client Pool Name: 10-200-4-0No DS group assigned